Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
M:4/4
K:C
['', 'B>AB G2 D', 'B2 d ded', 'GAB c2 B cdB cAF FGA B3']  
X:1
L:1/8
M:4/4
K:C
S uce :| .c-c/d/c/B/ cdB |[M:6/8][K:G][Q:1/8=160] A | B>AB G2 D | G>AG GBd | cBA GFG | Ade dcA | 
"^5" B>AB G2 D | GAG GBd | gfe dcB | AFA cB :| A |"^9" B2 d ded | dBd gdc | B2 d ded | ece afd | 
"^13" B2 d ded | ded def | gfe dcB | AFA cB :| c |"^17" d2 c dec | dBG GAB | c2 B cdB | cAF FGA | 
"^21" B3 c3 | dgg gab | ^fge dec | BGG G2 :|  