Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:4/4
K:D
['g2 fg']  
X:1
L:1/8
M:4/4
K:D
 f8 | gedg edBA | G2 BG dGB/c/d | g2 fg egdB | A/A/AAB e/e/eef | g2 fg edBA | GGBG dGBG | 
 g2 fg egdB | AGAB e2 ef | gefd eaa/a/a | gfga BAGB | AEE/E/E ABGA | B/c/def g2 gf | gefd eaa/a/a | 
 g/g/gg B2 AGB | AEE/E/E ABGA | B/c/def g2 ba | gfga gede | G B2 G dGBd | gGfG eGdB | AGAB e2 ef |]  