Compose a musical piece using the specified sequence's alphabetical representation and the provided motif.
X:1
L:1/8
Q:1/4=120
M:6/8
K:Dmix
['G3 G2 d B2 G (B/c/dB)', 'Bcd ded ded']  
X:1
L:1/8
Q:1/4=120
M:6/8
K:Dmix
 G3 G2 d | B2 G (B/c/dB) | G3 Bcd | EFG AFD | G3 G2 d | B2 G (B/c/dB) | gfe dcB | ABG AFD :: 
 Bcd ded | ded dcB | cde efe | efe edc | Bcd ded | ded def | gfe dcB | ABG AFD :|  