Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
M:3/4
K:C
['e2 cGce f2 dGBc d2', 'c4 e2 E2 E2 ^F^G A2 A2', '.f.e.d.c B2', 'd2 d2']  
X:1
L:1/8
M:3/4
K:C
 cd | e2 cGce | f2 dGBc | d2 BGBd | g2 eGcd | e2 cGce | f2 dGBc | d2 BGBd | c4 :: e2 | E2 E2 ^F^G | 
 A2 A2 (Bc) | B2 Bfed | d2 c2 ag | ^f2 f2 f2 | g2 agfe | (dcBcdB) | c4 :: (de) | .f.e.d.c B2 | 
 (B2 c4) | (^cd) d4 | (^d2 e4) | .f.e.d.c B2 | B2 c4 | (^cd) f2 B2 | c4 :| dd | d2 d2 d2 | 
 d2 e2 ^f2 | g2 a2 b2 | c'4 b2 | e'4 d'2 | ^c'2 =c'2 b2 | (ba)(ag)(g^f) |"_D.C." g4 |]  