Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/8
M:4/4
K:G
['BcdB cBAB', 'eA A2']  
X:1
L:1/8
M:4/4
K:G
 B3 A BcdB | cBAB cde^c | d2 de d^cAG | FDAD BDAF | DBBA BcdB | cBAB cdef | g2 fg ecAF |1 
 GBAF G3 A :|2 GBAF GABd |: g3 f gdBd | g2 fg eA A2 | eA A2 eAAe | fgaf gfef | g2 gf gdBd | 
 g2 fg eA A2 | eA A2 eA A2 |1 fgaf gdef :|2 fgaf gedB ||  