Develop a musical piece using the given motif and adhere to the outlined structure.
X:1
L:1/8
M:4/4
K:Eb
['G3 G ^FG AG B,2 E4 A3']  
X:1
L:1/8
M:4/4
K:Eb
"Eb" G3 G ^FG AG |"Bb" B,2 D2"Eb" E4 |"Bb7" A3 A GA BA |"Eb" B,2 E2 G4 | G3 E"Ab" FE DC | 
"Eb" B,2 EG B2"Fm" A2 |"Eb/Bb" G4"Bb7" F4 |"Eb" E6 z2 |]  