Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
M:6/8
K:Emin
['GAB AGF', 'z e3 g3 edc B2 z eBe']  
X:1
L:1/8
M:6/8
K:Emin
|: E3 GAB | AGF B3 | EBE G z A | AGF AGF | EBE GAB | AGF B2 A | Beg edc | BGE E2 z :: e3 g3 | 
 edc B2 z | eBe g3 | aga bge | (3bc'b a agg | gfe edc | Beg edc | BGE E2 z :|  