Assemble a musical creation that incorporates the furnished motif and conforms to the predetermined alphabetical structure.
X:1
L:1/8
M:2/4
K:Eb
['BB/c/e/cB/ BB/c/e<c BG/F/Bc Bc/B/B<G GG/F/GB B/c/f/d/cB G2']  
X:1
L:1/8
M:2/4
K:Eb
 BB/c/e/cB/ | BB/c/e<c | BG/F/Bc | Bc/B/B<G | GG/F/GB | B/c/f/d/cB | G2 | G4 | BccB/c/ | cdBB | 
 cf/d/cB | c<GGF | G>B z2 | ec/c/ec/G/ | B2 cc/B/ | GG/F/EB/G/ | F3 B- | BG F2- | F4 |]  