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
['DGBG dGBG', 'g2 ag/f/ gbag']  
X:1
L:1/8
M:4/4
K:G
 F | DGBG dGBG | FGAB cFAF | DGBG dGBG | cAFA AG G :| f | g2 ag/f/ gbag | f2 gf/e/ fagf | 
 g2 ag/f/ gbag | fdcA AG G2 | g2 ag/f/ gbag | f2 gf/e/ fagf | bgaf gbag | fdcA AG G2 ||  