BassChords & Intervals

train your ear · understand the harmony

Chords & Intervals.

Every melody is built from intervals; every chord from stacked thirds. Hear them, learn the song that lives inside each one, see how to play it on your instrument — then test your ear.

root note

The twelve intervals

Hear each one melodically (one after the other) or as harmony (together). The song is your memory hook.

Minor 2nd m2the “Jaws” themeD·2 → D·3
Major 2nd M2“Happy Birthday” (first step)D·2 → D·4
Minor 3rd m3“Greensleeves” / “Smoke on the Water”D·2 → G·0
Major 3rd M3“When the Saints” (Oh, when…)D·2 → G·1
Perfect 4th P4“Here Comes the Bride” / “Amazing Grace”D·2 → G·2
Tritone TT“The Simpsons” (The Simp-…)D·2 → G·3
Perfect 5th P5“Twinkle, Twinkle” / “Star Wars”D·2 → G·4
Minor 6th m6“The Entertainer” themeD·2 → G·5
Major 6th M6“My Bonnie” / the NBC chimesD·2 → G·6
Minor 7th m7“Star Trek” themeD·2 → G·7
Major 7th M7“Take On Me” (chorus leap)D·2 → G·8
Octave P8“Somewhere Over the Rainbow”D·2 → G·9

Name that interval

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Press start, then pick what you hear.