Construct a piece of music built on the supplied alphabet sequence and motif.
X:1
L:1/8
M:4/4
K:G
['BGcA defg']  
X:1
L:1/8
M:4/4
K:G
 BGcA defg | G2 BG AFDc | BGcA defg | dBcA G3 c | BGcA defg | G2 BG AFDc | BGcA defg | dBcA G2 Bd | 
 geag fdgf | ecfe dBed | cAdc BGcB | AGFA GABd | gG G2 BGBd | g2 fg edBd | cdec Bdge | dBAB G3 A ||  