Construct a piece of music built on the supplied alphabet sequence and motif.
X:1
L:1/8
M:6/8
K:Bb
['BcB B,2 B Bcd', 'E2 g']  
X:1
L:1/8
M:6/8
K:Bb
 BcB B,2 B | Bcd c3 | cdc C2 c | cde d3 | BcB B,2 B | Bcd cfe | dcB ABc | B3 B3 :: fgf D2 f | 
 E2 g E2 g | fed cdB | ABG F3 | GAB ABc | Bcd cde | dcB ABc | B3 B3 :|  