Develop a musical composition using the alphabetic representation of the specified sequence and incorporating the given motif.
X:1
L:1/8
M:4/4
K:G
['G>B e2 d2', 'b>a a>f d2']  
X:1
L:1/8
M:4/4
K:G
 z |"G" G>B d<g"C" e2 d2 |"D" e>gf>a"G" g>ed>B | G>B d<g"C" e2 d2 |"D" e>a f<d"G" g2 g :| | a | 
"G" b>a g<b"Bm" a>f d2 |"C" e>c G<g"G" d>B G2 | b>a g<b"Bm" a>f d2 |"D" e>a f<d"G" g2 g>a | 
"G" b>a g<b"Bm" a>f d2 |"C" e>c G<g"G" d>B G2 | G>B d<g"C" e>fg>a |"D" b>g f<a"G" g2 g |]  