Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:6/8
K:Bb
['G>AB A>Bc B>AG F2 F B2 B']  
X:1
L:1/8
M:6/8
K:Bb
 G>AB A>Bc | B>AG F2 F | B2 B c2 c | d6 | d>ed c>BA | B>AG F>GA | B2 G (^F>E)F | G6 |]  