In jazz, the standard altered chord has a # or b 9 and a b13. Notes come from Alt. scale or 7th degree of melodic minor scale. G7alt. would imply,
G,B,F and Ab or A# and Eb. The b5 or #11 is usually not played. #5 implied a different harmonic context. We use and see the the chord symbol #5 in dom.7th chords mainly because of "Standard Chord Symbol Notation" by Carl Brandt and Clinton Roemer from 1975. It's what most fake books, music programs and keyboards have adapted...doesn't mean it's correct...Reg |