Compose a musical piece by integrating the alphabetic representation of the specified sequence and the provided motif.
X:1
L:1/8
Q:1/4=120
M:4/4
K:G
['G>A B2']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:G
"^Moderate" G>A | B2 (g>e) (d<B) (AB) | G2 d>e d2 G>A | B2 (ge) (d<B) A>G | B2 e>f e2 z | g | 
 dega b2 (a>g) | (ag)(ab) d2 (ga) | (g/a/b) ag e2 ge | dB A>G G2 |]  