Develop a musical composition based on the specified form and using the given motif.
X:1
L:1/8
M:4/4
K:Eb
['GB AG']  
X:1
L:1/8
M:4/4
K:Eb
 z4 z2 E2 | GG GF GB AG | FE F>G F2 BA | EB AG FA GF | EE D>F E2 E2 | GG GF GB AG | FE F>G F2 BA | 
 GB AG FA GF | EE D>F E2 ed | cB B>c B2 EF | GF E>G F2 EE | GB BB cB AG | FE E>F E2 ed | 
 cB Bc BB EF | GF E>G F2 EE | GB BB cB GF | FE E>F E2 z2 |]  