Construct a musical piece conforming to the alphabetically indicated blueprint and the supplied motif.
X:1
L:1/8
Q:1/2=80
M:2/2
K:G
['(B>A) G2 (GE) (D3 D) G2 (GA)', 'G2 z f (gf)(ef) (d3 d) (gf)(ga)']  
X:1
L:1/8
Q:1/2=80
M:2/2
K:G
 (B>A) | G2 (GE) (D3 D) | G2 (GA) (cB)(AG) | (cB)(ce) (dB)(AG) | (AB)(AG) E2 (BA) | G2 (GB) D3- D | 
 G2- G2 g3 f | (ed)(cB) (AB)(cd) | (cB)(AF) G2 :: z f | (gf)(ef) (d3 d) | (gf)(ga) b3 a | 
 e2 (ge) (dB) (AG) | (AB)(AG) E2 (BA) | G2 (GB) (D2 D2) | (G2 G2) g3 f | (ed)(cB) (AB)(cd) | 
 (cB)(AF) G2 :|  