Construct a piece of music built on the supplied alphabet sequence and motif.
X:1
L:1/8
Q:3/8=110
M:6/8
K:F
['A3 (BAB) c2 f f3 F3 GFG', 'F2 c', 'a a2']  
X:1
L:1/8
Q:3/8=110
M:6/8
K:F
 A3 (BAB) | c2 f f3 | F3 GFG | ABA GcB | A3 BAB | ecf fdB | AB=B c_BG | F2 A F2 || c | c2 B GAB | 
 c2 A F2 c | c2 B GAB | c2 A F2 c | dcB fed | c2 A f2 f | cdc cBA | A3"^segno" GdB || a | 
 a2 f def | e2 ^c A2 a | a2 g efg | a2 f d2 A | BGB d2 B | A^GA d2 c | cdc cBA | A3"^DC" GcB |]  