Perfect 4th
5 semitones.

A perfect 4th sounds open and slightly unresolved. The fastest way to recognize it is the opening of Here Comes the Bride.

Play it on piano
P4 · 5 st
Same songs as the trainer

Perfect 4th

Hear the perfect 4th from middle C

The perfect 4th is 5 semitones (P4). From C4 at 261.63 Hz the upper note is F4 at 349.23 Hz, a frequency ratio of 1.3348.

Ascending hookHere Comes the Bride

Descending hookEine kleine Nachtmusik

Characteropen and slightly unresolved

Sing the opening of Here Comes the Bride and you are singing this interval upward. Downward, the hook is Eine kleine Nachtmusik. The interval trainer uses these same hooks.

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StudioEarsEar training for iPhone & iPad

Recognize it without the song hint.

The app drills this interval against the ones you confuse it with, and keeps score across days.

Download on theApp Store

Free to start. 5 free training units every day plus built-in studio tools.

EQ & compressionDaily drills on drums, bass, guitars and full mixes.
Intervals & chordsPiano training that uses the same note names as these pages.
Studio toolsMetronome, tone generator and tap tempo live in the app too.

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FAQ

Perfect 4th questions

How many semitones is a perfect 4th?

5. Stack them from any note and you land 5 keys away on the piano, counting only the destination.

What song starts with it?

Ascending: Here Comes the Bride. Descending: Eine kleine Nachtmusik.

How do I practice it?

Play the buttons above, sing the hook, then do a round in the interval trainer with only this interval and its neighbors turned on.

Hear the perfect 4th from middle C

All twelve

Recognize it without the song hint.

Keep training & testing

Perfect 4th questions