Assemble a musical creation that incorporates the furnished motif and conforms to the predetermined alphabetical structure.
X:1
L:1/8
M:4/4
K:D
['A>B Ad f>e dA B>A Bd B2', 'aA fA BA dA aA fd B2']  
X:1
L:1/8
M:4/4
K:D
 f | A>B Ad f>e dA | B>A Bd B2 Ad | c>B cd e>d ef | ge ce dc BA | A>B Ad f>e dA | B>A Bd B2 Ad | 
 c>B cd e>d ef | ge ce d2 d || f/g/ | aA fA BA dA | aA fd B2 Ad | c>B cd e>d ef | ge ce dcBA | 
 aA fA BA dA | aA fd B2 Ad | c>B cd e>d ef | ge ce d2 d ||  