Develop a musical composition using the alphabetic representation of the specified sequence and incorporating the given motif.
X:1
L:1/8
M:2/2
K:Emin
['B2 AG']  
X:1
L:1/8
M:2/2
K:Emin
|:"Em" B2 e2"A" ^c2"B7" ^d2 |"Em" e2"D7" dc"G" B3 c |"G" dedc"^(Em)" B2 AG |"B" FEFG"Em" E4 :| 
"Em" GABc B2 AG |"Bm" FEFG"Em" E3 F |"G" GABc B2 AG |"D" FEFG"Em" E4 |]:"G" G2 GG D2 D2 | 
"C" EFGA"G" B3 c |"G" dedc"^(Em)" B2 AG |"B7" FEFG"Em" E4 :|  