Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:4/4
K:C
['fdBG ABcA BGEC', 'z2 AGAB c^Bcd e2 (3efg aece agfe']  
X:1
L:1/8
M:4/4
K:C
[M:2/2][K:A] fe[Q:1/8=150] .efec fdBG | ABcA BGEC | DEFG ABcA | (3BcB (3AGF E2 E2 | efec fdBG | 
 ABcA BGEC | DFAc dc (3BAG | B2 A2 A2 z2 :| AGAB c^Bcd | e2 (3efg aece | agfe dcBA | 
 (3BcB (3AGF E2 ED | CAEA BAEA | FADA dBGB | Afed cBAG | B2 A2 A2 z2 :|  