Compose a piece of music following the given alphabetical representation of the musical structure and the provided motif.
X:1
L:1/8
M:4/4
K:G
['B2 G2']  
X:1
L:1/8
M:4/4
K:G
|: B>c |"G" d>B D>G B2 G2 |"C" E>c E>G c2 A2 |"D7" F>d F>A d>c B>A |"G" (3GBA (3GFE"D7" D2 B>c | 
"G" d>B D>G B2 G2 |"C" E>C E>G c2 B>A |"D7" G>A F>E D>E F>A |"G" G2 B2 G2 B>c |"G" d>e d>B G2 D2 | 
"D7" A>B A>G F2 D2 |"G" d>^c e>d"Em" B>G F>G |"A7" (3ABA (3GFE"D" D2 B>c |"G" d>e d>B G2 D2 | 
"D7" A>B A>F D2 d>c |"G" B>d B>G"C" E>c"D7" A>F |"G" G2 B2 G2 :|  