Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:2/2
K:G
['G2 GG G2 (BA) GABA GE(TED) EGGA', 'd2 (gd)']  
X:1
L:1/8
M:2/2
K:G
 (BA)S | G2 GG G2 (BA) | GABA GE(TED) | EGGA GABd | (3(efg) dB (TBA)AB | G2 GG G2 (BA) | 
 GABA GE(TED) | EGGA GABd | egdB (TBA) !fermata!A2 |] | d2 (gd) edgd | d2 (gd) BAAB | 
 d2 (gd) edef |{a} gedB (TBA)AB | d2 (gd) edgd | d2{a} (gd) (TBA)AB | c2 cA (TBA)Bd | 
 (3(efg) dB (TBA)ASB |]  