Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
Q:1/4=120
M:6/4
K:Ab
['DD C2'  
X:1
L:1/8
Q:1/4=120
M:6/4
K:Ab
|:"Ab" E/E/- E3 E/D/C/D/ E6 |"Db" D/D/- D3 D/C/B,/C/ D6 |"Ab" C/C/- C3 D/C/B,/A,/ B,6 | 
"Db" D/D/- D3 D/E/-E D6 |"Ab" C12 ::[I:MIDI= program 26]"^prog: 27""Ab" E2 DD C2 DD DC z2 | 
 E2 DD C2 DD DC z2 | E2 DD C2 DD C2 z2 :|  