Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:4/4
K:D
['', 'DBAB D2', 'f3 g fede fedB fded BdAd eg']  
X:1
L:1/8
M:4/4
K:D
 AG |: FADA FADA | FAdA BAdA | FADF E"B"DEF | DBAB D2 AG | FADA FADA | FAdA BABc | dBAF E"B"DEF |1 
 DBAB D2 AG :|2 DBAB D2 de |:"^R" f3 g fede | fedB ABde |"B" f3 g fede | faaf e"B"fde | 
"^R" f3 g fede | fedB A"B"Bde | fded BdAd | eg fe d3 e :|  