Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/4
Q:1/2=90
M:2/2
K:Eb
['G F']  
X:1
L:1/4
Q:1/2=90
M:2/2
K:Eb
 B, |"Eb" E3/2 F/ G A | (B2 G) E |"Bb7" G F E D |"Eb" E2 z E |"Bb" D E F G |"Bb7" A3 G | 
"Bb/F" F B"F7" B =A |"Bb" B2 z || B |"Ab" c3/2 =B/ c A |"Eb" B3/2 =A/ B G |"Bb7" A3/2 G/ A F | 
"Eb" G E"Bb" F B, |"Eb" (E3/2 F/ G)"^(Bb7)" A |"Eb" B3"^(Fm)" A |"Eb/Bb" G2"Bb7" F2 |"Eb" E3 |]  