Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
M:4/4
K:Amin
['A2 A>B']  
X:1
L:1/8
M:4/4
K:Amin
 ed/B/ |"Am" A2 A>B AG GA |"C" c>d ec"Dm" d2 e<g |"Am" a>g ed"Em" ed BA |"G" G>E GA"Em" G2 ed/B/ | 
"Am" A2 A>B AG GA |"C" c>d ec"Dm" d2 e<g |"Am" a>g ed"Dm" cA"Em" BG |"Am" A2 A>B A2 || ef |: 
"C" g>f ed c>d ef |"C" g>a ge g2 ef/g/ |"Am" a>g ed"Em" ed BA |"G" G>E GA"Em" G2 ed/B/ | 
"Am" A2 A>B AG GA |"C" c>d ec"Dm" d2 e<g |"Am" a>g ed"Dm" cA"Em" BG |"Am" A2 A>B A2 :|  