Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
Q:1/8=110
M:3/4
K:G
['B4 AG', 'B3 A']  
X:1
L:1/8
Q:1/8=110
M:3/4
K:G
 B4 (AG) | d4 (cB) | g4 (fe) | d (B3 B) z/ B/ | B4 AG | A2 e3 (d/c/) | B3 c BA | G4 z D | B4 AG | 
 d4 cB | (g3 f) ag | (f3 e) cA | A (G3 G) g | g D (D3 D)G | B3 (B A2) | G4 z || B | g4 fe | 
 f f3 d2 | e4 de | (c B3) A2 | G4 FE | E E3 E2 | G4 G>G | F4 z D | B4 AG | d4 cB | g2 a3 g | 
 g e3 (fg) | (g3 d) BG | GF B3 A | A2 d3 c | B4 B2 | (B3 A) ce | d2 g3 e | d A3 c2 | c B3 B2 | 
 B3 A ce | (g2 G4) | E2 D3 d | d2 G4 ||  