Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
Q:1/4=100
M:4/4
K:Ab
['c>d c2 B2 B2 B>c B2 A2'  
X:1
L:1/8
Q:1/4=100
M:4/4
K:Ab
 c>d |"Eb7" c2 B2 B2 B>c |"Ab" B2 A2 A2 A>G |"Db" F2 F2 F2 (A>F) |"Ab" E4 z2 c>d | 
"Eb7" c2 B2 B2 B>c |"Ab" B2 A2 A2 Bc |"Db" d2"^(Bbm)" d2"Eb" G2"^(Eb7)" G2 |"Ab" A4 z2 || (c>d) | 
"Ab" e4 c4 |"Db" (BA) (GF)"Ab" E2 AG |"Db" F2 A2"Bbm" d2 c2 |"Eb" B4 z2"Eb7" (c>d) |"Ab" e4 c4 | 
"Db" (BA) (GF) !fermata!d2"^(Bbm)" c>B |"Ab/Eb" A2 A2"Eb7" c3 B |"Ab" A4 z2 |]  