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
['d2 dd']  
X:1
L:1/8
M:4/4
K:C
 GA | BA BG E2 EF | GF GA B2 d2 | d2 dd ed cB | cA GF G2 d2 | d2 dd d2 dd | eE EF G2 EF | 
 G2 AB cd e A | A2 B^c !fermata!d2 BA | BG FED!fermata!c BA | B2 GE E2 z x |]  