On March 18, 2014 at 13:37, Lowhz said...
A fifth is never major. Unaltered it is perfect. Altered it is augmented or diminished.
If you're going to quote music theory then you have to be correct about it.
Perfect Intervals:
Unison, 4th, 5th, Octave
Imperfect (major or minor unaltered, depending on tonality)
2nd, 3nd, 6th, 7th
Then, there's the interval that got people in trouble-