Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:4/4
K:G
['B>G G2{FG} D>G G>c B>G', 'A2 B>d e2']  
X:1
L:1/8
M:4/4
K:G
 dc | B>G G2{FG} D>G G>c | B>G (Af) gedc | B>G G2{FG} D>G G>c | B>G d>B A2 d>c | 
 B>G G2{FG} D>G G>c | B>G A>f g2 (fg) | afge d3 B | (eg) dB A2 :: B>d | e2 fd edBA | (Bd)Af gedc | 
 B>G G2 D>G G>c | B>G d>B A2 B>d | e2 f>d edBA | Bdef g2 f>g | afge d2 B>d | egdB A2 :|  