Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:4/4
K:F
['bg eg']  
X:1
L:1/8
M:4/4
K:F
|:"F" F2 Ac f2 fe |"Bb" ed dB"Gm" G4 |1,3"C7" E2 ce bg eg |"F" fe fg a2 f2 :|2,4"C7" c2 eg bg eg | 
"F" f2 f2 f4 ::[K:Amin]"Dm"{f} a2 af d2 df |"Am" e2 ec A2 AB | c2 Ac"E7" B2 A^G |1,3 
"Am" A2 E2 C2 A,2 :|2,4"Am" A2 A2 A4 :|  