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
['(dB) A2 (AB) GFGB', 'e2 (ef)']  
X:1
L:1/8
M:4/4
K:C
[M:2/2][K:Ador] .abc (dB) | A2 (AB) GFGB | AGAB e2 (dB) | A2 (AB) GFGB | dBGB d2 (dB) | 
 A2 (AB) GFGB | AGAB cBcd | edef gfge | dBGB A2 || (Bd) | e2 (ef) gfgf | edcd efgf | e2 (ef) gfge | 
 dBGB d2 Bd | e2 (ef) gfgf | efge a2 (ef) | gaba gfef | gedB A2 |]  