Develop a musical composition by utilizing the given alphabetic notation and supplied motif.
X:1
L:1/8
M:4/4
K:Bb
['E2 G2']  
X:1
L:1/8
M:4/4
K:Bb
 E2 | G2 GG B2 AF | FE EE E2 G2 | AGAB cB e2 | ecAc B2 E2 | G2 B>B e>ec>A | B>cB>A G2 E2 | 
 E>FG>A B2 A>G | F4 E2 z2 |]  