One melody, two scales — and the second is derived
A short melody that leans on its fourth degree:
# the melody — pure degrees, leaning on the 4
1 1 4 4 1 4 4 5
Play it in plain G major and it’s ordinary. Then play the same degrees through G Lydian — a scale not typed out by hand, but derived from major by rotating its interval pattern:
major semitones: 0 2 4 5 7 9 11
lydian semitones: 0 2 4 6 7 9 11 # ← the 4th degree, raised
Every note that lands on degree 4 rises a semitone, and the melody takes on Lydian’s bright, floating quality — without one number in the melody changing. The data stays put; a different (and derivable) scale gives it a new color.