If you’ve mastered the ascending and descending forms of an interval but are having difficulty with the harmonic version (both notes at once) there are a number of things you can try:

1. Sing it back

Singing is probably the most powerful way to improve your harmonic hearing. Whether or not you’re a star singer, you should try singing out the notes of an interval after you hear it – this really helps your brain internalise the sound.

Here’s the step-by-step:

  1. Play the harmonic interval (with your instrument, recording, or app!)
  2. Listen closely and try to ‘pick apart’ the sound into its two notes
  3. Sing back the two notes, one after the other