Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
Q:1/4=120
M:9/8
K:Ab
['E F2 G']  
X:1
L:1/8
Q:1/4=120
M:9/8
K:Ab
 E3 | (E3 E2 C2) D (EF) G | A3 E2 E F2 G | (E3 E) z E F2 G | E3 z2 z E3 | (F3 FD) E (FG) A | 
 B3 F2 F G2 A | (F3 F) z F G2 A | (F3 F2) z c3 | (c3 c2) B (AB) c | (d2 c) B2 A G2 F | 
 (=E3 E) z A G2 F | =E3 z2 z C3 | (c3 c2) B (AB) c | (e2 d) c2 f e2 d | (c3 c) z E F2 G | 
 (A3 A2) z |]  