Tritone by Ear
6 semitones — and 2 other distances waiting to be named instead.
The interval drill loads here.
The tritone is 6 semitones across. Sung or played, it is one of thirteen answers, and the reason it stays hard is that 2 distances sit close enough to steal it: perfect 4th and perfect 5th.
Confusion setperfect 4th · perfect 5th — drill it against these, never on its own. Once it is solid you will start hearing it inside diminished triad, diminished 7th and half-diminished 7th, which is where the chord rounds pick it up.
Anchor tunes, each with the direction to move your voice — the part of an anchor that actually transfers:
- Maria (West Side Story) — sing it upward from the reference.
- The Simpsons (theme) — sing it upward from the reference.