Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/8
M:3/4
K:G
['bd gb']  
X:1
L:1/8
M:3/4
K:G
"G" dg bd gb |"Am" d'2 c'e' ac' |"D7" df ad fa |"G" e'2 d'g' bd' | dg bd gb |"Am" d'2 c'e' ac' | 
"D7" df ad fa |1"G" G4 z2 :|2"G" G4 ed |]:"D7" c'd ac' dc' |"G" bd gb db |"D7" ad fa df | 
"G" gb d'2 e'd' |"D7" c'd ac' dc' |"G" bd gb db |"D7" ad fa df |1"G" g4 ed :|2"G" g4 z2 |]  