Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/8
Q:1/4=104
M:2/4
K:G
['g>GB>G g>GB>G', 'G2 G>Bd>G g<Bd<B G<Bd<B F<A A2 G<Bd<B']  
X:1
L:1/8
Q:1/4=104
M:2/4
K:G
 g>GB>G | g>GB>G | (3FAD (3FAD | g>GB>G | g>GB>G | c>de>c | EAFD | G2 G2 :| G>Bd>G | g<Bd<B | 
 G<Bd<B | F<A A2 | G<Bd<B | (3EFG (3AFD | G2 G2 |]  