Develop a musical composition using the alphabetic representation of the specified sequence and incorporating the given motif.
X:1
L:1/8
M:2/4
K:Emin
['Be- eg ee e2 aa e2 f/g/a-']  
X:1
L:1/8
M:2/4
K:Emin
|:"Em" Be- eg | ee e2 | bb"Am" aa |"B7" gf"Em" e2 ::"Am" f/g/a- aa- | aa- aa |"B7" g>f ee |1,3 
 fg"Am" a2 :|2,4"Em" e3 z :|  