Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:2/2
K:Emin
['BcAF G2', 'BcAF G2', 'e2 (ef) (Tgf)ga gdBd gefd Beef (Tgf)ga', 'Bee f (Tgf)ga gdBd gefd Beef gfga']  
X:1
L:1/8
M:2/2
K:Emin
 d | BcAF G2 GA | B2 Ac Beed | BcAF G2 ef | gefd Bee || d | BcAF G2 GA | B2 Ac Beed | BcAF G2 ef | 
{a} gef^d"^H" e2 |] | (ef) | (Tgf)ga gdBd | gefd Beef | (Tgf)ga bgaf | gefd Bee || f | 
 (Tgf)ga gdBd | gefd Beef | gfga bgaf | gefd B"^D.C."e e |]  