Introduction

Intervals are often learned as a list of names: minor third, perfect fourth, fifth, major sixth. But in real music, a note rarely exists on its own. We hear it relative to a bass note, a chord, a tonic, or another point of reference.

That is why the Interval Trainer in Six Strings App uses a continuous drone: a long, steady reference note. Another note plays above it, and your task is to identify the interval between them.

I did not want to invent an unusual exercise for this. An interval trainer is a familiar and useful tool for developing your ear. I wanted to have one on the site alongside the metronome, fretboard tools, harmony tools, and other trainers. Gradually, Six Strings App is becoming a musical Swiss Army knife for me: when I need a particular tool for practice, it is already there and ready to use.

What an Interval Is and Why You Need to Hear It

An interval is the distance between two notes.

For example, if the drone plays C and the note above it is G, the interval is a perfect fifth. If the note above C is E, the interval is a major third. The names matter, but the main purpose of training is to learn to recognize these distances by ear.

This skill is useful when you want to:

• pick out a melody by ear;
• understand where a vocal line is moving;
• sing notes more accurately;
• find sounds on the fretboard without relying only on visual shapes;
• improvise relative to a chord or tonal center;
• better understand why one note sounds settled while another creates tension.

Interval training does not replace playing an instrument. It helps connect what you hear with what you later play or sing.

Why the Trainer Uses a Drone

A drone is a continuous reference note. While it stays in place, you can listen to different intervals above it and compare how they feel.

Without a reference point, the exercise can easily become a guessing game between two unrelated sounds. With a drone, the task feels more musical: there is a stable center, and every new note is heard as a distance from that center.

Against the same reference note:

• an octave feels closely aligned with the center, only higher or lower;
• a third introduces the character of major or minor;
• a fourth creates a different sense of support and movement;
• a fifth often feels open and stable;
• a seventh usually creates a stronger pull toward continuation or resolution.

You do not need to describe every feeling in words from the beginning. The important step is to notice that intervals have different characters, not just different names.

Why I Added This Trainer to the Site

I already had tools for rhythm, the fretboard, chords, and harmony. But for a complete practice workflow, I was missing a simple trainer I could open whenever I wanted to work on my ear.

I was not trying to reinvent interval training. What matters more is that this tool sits alongside the other working pages in Six Strings App and follows the same familiar interface logic.

If I am practising rhythm today, I open the metronome or rhythm trainer. If I am working through chords and scales, I move to the fretboard and harmony tools. If I want to train my ear, I open the Interval Trainer.

For me, the site is gradually becoming less of a collection of separate pages and more of a toolkit for different parts of the same musical practice.

How the Interval Trainer Works

The exercise is simple:

1. A drone begins to play in the background as the reference note.
2. Another note plays above it.
3. You identify the interval formed relative to the drone.
4. After answering, you can check the result and move to the next task.

The trainer lets you choose how the key behaves: you can practise in a fixed key, change the key between sessions, or get a new key for each exercise. You can also work in major, minor, or both.

To make the tonal center clearer, you can enable an introductory I–IV–V–I cadence before the exercises. It helps establish where “home” is before the interval tasks begin.

Session statistics are not there for competition. They help you see which intervals you already recognize confidently and which ones you still confuse regularly.

Where to Start

In ear training, it is easy to choose a mode that is too difficult and become tired quickly. It is better to begin with a small set of intervals and a clear reference point.

Step One: One Familiar Key

Choose a fixed key and stay with it for several short sessions. This way, you do not need to adjust to a new tonal center every time.

At this stage, the main goal is to hear the basic principle: the drone remains in place, while the upper note changes its distance from it.

Step Two: A Few Simple Intervals

Do not try to distinguish every interval at once. Start with clearly contrasting options: unisons, thirds, fourths, fifths, or octaves, depending on the available difficulty level.

The fewer options you have at the beginning, the easier it is to notice differences in sound instead of guessing names.

Step Three: Major and Minor

Once simple intervals become easier to recognize, try comparing how they feel in major and minor contexts.

This matters outside the exercise as well. In songs and improvisation, the same note can feel different depending on the harmonic environment around it.

Step Four: Random Keys

After you are comfortable practising in one key, enable random selection. This tests whether you recognize the interval itself rather than memorizing one particular sound in one particular key.

How to Use the Trainer in Real Practice

For Guitarists

After a short ear-training session, open the Fretboard Explorer and find the same intervals on your instrument.

For example:

1. Choose C as your reference note.
2. Find a major third, perfect fourth, and perfect fifth above C.
3. Play them one by one.
4. Compare how they feel with what you heard in the trainer.

This way, an interval stops being only an answer in an exercise and becomes a real sound under your fingers.

For Singers

A drone gives you a stable note against which you can sing intervals. First listen to the task, then try to sing the upper note before answering.

Even if your voice does not land exactly on pitch straight away, this type of practice teaches you to hear direction and distance rather than simply press the correct button.

For Improvisation

When improvising, a musician constantly chooses notes relative to a harmonic reference point. Some notes outline the chord, some add tension, and others lead toward resolution.

The Interval Trainer will not teach improvisation by itself, but it can help you notice the character of individual scale degrees relative to a tonal center.

For Learning Songs by Ear

When a melody contains a noticeable leap, it helps to try hearing it as an interval. Over time, this makes it easier to pick out vocal lines, riffs, and melodies on your instrument.

Why One Trainer Is Not Enough

Recognizing an interval inside an exercise is a useful step, but it is not the final goal.

To carry that skill into real music, it helps to combine several kinds of practice:

• in the Interval Trainer, listen to distances relative to a drone;
• in the Fretboard Explorer, find the same interval on your instrument;
• in Harmony, hear intervals inside chords and keys;
• in the Chord Functions Trainer, move from individual notes to the role of a chord in a musical context.

This way, ear training stops feeling like a separate test and becomes part of playing, improvising, and writing music.

A Simple 10-Minute Practice Session

Here is a basic routine to start with:

1. Choose a fixed key.
2. Set the drone to a comfortable volume.
3. Leave only a small set of simple intervals active.
4. Practise in the trainer for 5 minutes.
5. Open the Fretboard Explorer and play the same intervals from the same reference note.
6. At the end, try singing one or two intervals above the drone.

The goal of this session is not to achieve a high score. It is to connect three actions: hear, find, and reproduce.

Common Mistakes

Trying to Memorize Intervals Only Through Songs

Associations with familiar melodies can help at the beginning, but they have a limitation: you recognize an interval by recalling another piece of music.

A drone helps you hear the interval more directly, as a distance from a stable reference point.

Enabling Too Many Options Too Soon

If you mix many intervals, keys, and modes from the beginning, practice quickly turns into random answering.

Start with a simpler setup and increase the difficulty gradually.

Looking Only at Your Accuracy Score

Statistics are useful, but they do not replace careful listening. It is more important to notice which intervals you confuse and how they differ in sound.

Never Taking the Skill to Your Instrument or Voice

An interval that you recognize only inside the trainer has not yet become a musical skill. Try playing or singing it relative to the same reference note.

Frequently Asked Questions

Do I Need to Know Music Theory Before I Start?

No. To begin, it is enough to understand that the drone is a reference note and the second note is heard at a certain distance from it. The interval names will gradually become familiar through practice.

Why Not Train Intervals Without a Drone?

You can practise that way as well. But a drone gives you a constant reference point and helps you hear each note relative to a center. This is especially useful for improvisation, singing, and understanding keys.

How Long Should I Practise?

Regular sessions of 5–10 minutes are usually more useful than occasional long sessions. Your ear gets tired, and short, focused practice is often more effective than mechanical guessing.

Is the Trainer Only for Guitarists?

No. It is useful for any musician who wants to hear intervals more clearly: singers, bass players, keyboard players, songwriters, or anyone just beginning to develop their ear.

What Next

The Interval Trainer is a basic tool for ear training. It does not promise that you will instantly be able to pick out any piece of music by ear. Its task is simpler and more practical: to help you hear how different notes feel relative to one stable reference point.

I wanted this kind of tool to be always within reach, alongside the metronome, fretboard tools, chord tools, harmony tools, and the other trainers in Six Strings App.

To try this approach in practice, open the Interval Trainer, choose a simple mode, and begin with a short session against a drone.