SIb 7 chord

Base note: A#
Chord type: dominant seven
Costruction: 1,3,5,b7
Aliases: Bb Dominant Seven SIb Settima Dominante Bb7 SIb7 Bbdom7 SIbdom7 A#7 LA#7 A# 7 LA# 7 Bb 7 SIb 7