A# add11, add4 chords
A#add11 and A#add4 chords for piano with keyboard diagram.
Explanation: The A sharp add11 and add4 are four-note chords. Due to practical circumstances, the add11 chord is played inverted; alternatively with two hands.
Theory: Both chords contain the same notes, but the added notes belong to different octaves which are the eleventh and the fourth notes in the scale. The eleventh or fourth is added to the A# major chord.
A#add11
Notes: A# - D - F - D# / A# - C## - E# - D#
A#add4
Notes: A# - D - D# - F / A# - C## - D# - E#
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