Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/16
M:2/4
K:C
['d2de dcBd [cGE]2[cGE]2 [cGE]4 [EC]2[EC][FD] [GE]2[GE][GE] [BGD][BGD][BGD]', '[EC]2[EC][FD] [GE]2[GE][GE] [BGD][BGD][BGD] z']  
X:1
L:1/16
M:2/4
K:C
"^A""G7" d2de dcBd |"C" [cGE]2[cGE]2 [cGE]4 ||"C" [EC]2[EC][FD] [GE]2[GE][GE] | 
"Cm" [cG_E]2BA"G" [BGD][BGD][BGD] z |"G7" [dBF]2dc [BGF]2BB |"C" [AEC]2[AEC]2 [GEC]4 | 
"C" [EC]2[EC][FD] [GE]2[GE][GE] |"Cm" [cG_E]2BA"G" [BGD][BGD][BGD] z |"G7" [dGF]2de [dFG] cBA | 
"C" [GE]2[GE]2 [GEC]4 |"G7" [DB,]2[DB,][EC] [FD]2[FD][FD] |"C" [EC]2[EC][FD] [GE][GE][GE] z | 
"G7" [BFD]2BB [BFD]2A2 |"C" [AEC]2[GEC]2 [GEC]4 |"G7" [FD]2FE [DB,]2DD | 
"G7" [BFD]2BA"C" [GE][GE][GE] z |"D" [dA^F]2dc"G" [BGD]2BB |"D7" [A^FD]2B2"G7" [G=FD]4 | 
"C" [EC]2[EC][FD] [GE]2[GE][GE] |"Cm" [cG_E]2BA"G" [BGD][BGD][BGD] z |"G7" [dBF]2de dcBd | 
"C" [cGE]2[cGE]2 [cGE]4 |]  