Compose a music piece that includes the specified motif while adhering to the outlined alphabetical sequence.
X:1
L:1/8
M:12/8
K:Eb
['G3 GcB =A3 B3']  
X:1
L:1/8
M:12/8
K:Eb
"Eb" G3 GcB =A3 B3 | E3 EDE"Bb7" (G3 F3) |"Eb" G3 GcB =A3 B3 |"Cm" B3"F7" =AGA"Bb" B3 z3 | 
"Ab" A3 AAA"Eb" A3 G3 |"Ab" c3 ccc"Eb" B3 z3 | e3 eee"Ab" e3 c3 |"Eb/Bb" B3"Bb7" BAF"Eb" E3 z3 |]  