Create a musical composition incorporating the given motif following the designated alphabetical pattern.
X:1
L:1/4
M:4/4
K:G
['d d']  
X:1
L:1/4
M:4/4
K:G
 d d d | d d _e e | c2 d _e | =f g _e2 | d2 z d | g g _e e | =f f d2 | c A G2 | _B c d2 | A _B c2 | 
 G A B c | A3/2 A/ G2 | _B c d2 | A _B c2 | G A B c | A3/2 A/ G2 | G A _B c | A3/2 A/ G2 | z |]  