Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
Q:1/4=100
M:4/4
K:Ab
['E2 A2 A3 B (AG) A2']  
X:1
L:1/8
Q:1/4=100
M:4/4
K:Ab
"Ab" E2 A2 A3 B |"Eb7" (AG) (FG)"Ab" A2 E2 |"Eb" E2 B2 B3 c |"Ab/Eb" (BA) (GA)"Eb" B3 z | 
"Ab" E2 A2 A3 B |"Eb7" (AG) (FG)"Fm" A2 B2 |"Ab" c2"Ab7" e2"Db" (ed) (cB) | 
"Ab/Eb" A2"Eb7" G2"Ab" A3 z ||"Eb" B2 B2 B3 c |"Eb7" (dc) (Bc) d2 B2 |"Ab" c2 c2 c3 e | 
"Bb" (e=d)"Bb7" (cd)"Eb" e3 z |"Ab" E2 A2 A3 B |"Eb7" (AG) (FG)"Fm" A2 B2 | 
"Ab" c2"Ab7" e2"Db" (ed) (cB) |"Ab/Eb" A2"Eb7" G2"Ab" A3 z |]  