Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
Q:1/2=100
M:4/4
K:G
['D3 E G3 A', 'TB2 (AG)']  
X:1
L:1/8
Q:1/2=100
M:4/4
K:G
 D2 | D3 E G3 A | (BG)(dc) TB2 (AG) | TF3 E DEFG | (AF) (dF) TE2 D/E/F | D3 E G3 A | BABd e2 (dc) | 
 TB2 (AG) A2 (GA) | (G/A/B) A>G G2 :| (d/e/f) | gfga (g/a/b) (ag) | fefg (f/g/a) (gf) | 
 e^def gfe=d | B2 (ef) e2 (dc) | TB2 (AG) d2 (cB) | e^d (e/g/f/a/) g3 =d | TB2 (AG) A2 (GA) | 
 (G/A/B) .A>G G2 :|  