Build a composition using the stipulated musical framework and theme.
X:1
L:1/8
M:3/4
K:G
['GA AB BG AB Bc cd ed', 'FG A2 AB cd c2 BG'  
X:1
L:1/8
M:3/4
K:G
 GA AB BG | AB Bc cd | ed BB dc | AB G2 z2 :| FG A2 AB | cd c2 BG | FG A2 AB | cd c2 BG | 
 GA AB BG | AB Bc cd | ed BB dc | AB G2 z2 :|  