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Interval

Perfect 5th
7 semitones.

A perfect 5th sounds hollow and strong, like a power chord. The fastest way to recognize it is the opening of Star Wars (main theme).

  • Play it on piano
  • P5 · 7 st
  • Same songs as the trainer

Perfect 5th

Hear the perfect 5th from middle C

The perfect 5th is 7 semitones (P5). From C4 at 261.63 Hz the upper note is G4 at 392.00 Hz, a frequency ratio of 1.4983.

Ascending hookStar Wars (main theme)
Descending hookThe Flintstones theme
Characterhollow and strong, like a power chord

Sing the opening of Star Wars (main theme) and you are singing this interval upward. Downward, the hook is The Flintstones theme. The interval trainer uses these same hooks.

All twelve

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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.

Explore the cluster

Tritone One step smaller. Previous interval → Minor 6th One step larger. Next interval → Interval trainer Name it from a random root. Train →

FAQ

Perfect 5th questions

How many semitones is a perfect 5th?

7. Stack them from any note and you land 7 keys away on the piano, counting only the destination.

What song starts with it?

Ascending: Star Wars (main theme). Descending: The Flintstones theme.

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.