Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:4/4
K:C
['BDAF EFGA BE E2 Ad d2 fdAF', 'e2 ge bege']  
X:1
L:1/8
M:4/4
K:C
[M:4/4][K:D] ee gg!p! a d ve e e e ad f!p! ua cave[Q:1/8=180].dDcD BDAF | EFGA BE E2 | Ad d2 fdAF | 
 GBAG FD (3FED | dDcD BDAF | EFGA BE E2 | Ad d2 fdAF | GBAG FDD || A | B2 dB AFDA | B2 dB BcdA | 
 BAGB AFDF | GAFG EFGA | BAGB AFDF | B2 dA BcdA | BAGB AFDF | GEFD EFGB | e2 ge bege | EFge fgaf | 
 e2 ge bege | E2 gE fecf | e2 ge bege | EFge fgaf | e2 ge bege | E2 GE fecf ||  