Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
Q:1/8=180
M:4/4
K:C
['BGFG EGFG', 'gfga gdBd gfga g2'  
X:1
L:1/8
Q:1/8=180
M:4/4
K:C
[M:4/4][K:G] ecd!p! a.dc | BGFG DGFG | Bdef gedc | BGFG EGFG | BedB A2 dc | BGFG EGFG | 
 Bdef g2 ga | bgaf gedB | GedB A2 :| (3def | gfga gdBd | gfga g2 (3def | gfga gdBc | 
 d=fed c2 (3de^f | gfga gdBd | gfga g2 ga | bgaf gedB |1 egdB A2 :|2"^last time" egdB G4- | G8 |]  