Develop a composition incorporating the specified chord progression.
'Db', 'Ab', 'Bbm', 'Fm', 'Gb', 'Ab', 'Db', 'Gb', 'Db', 'Ebm7', 'Eb7', 'Ab', 'Db', 'Ab', 'Bbm', 'Fm', 'Gb', 'Bb7', 'Ebm', 'Ab7', 'Db', 'Gb', 'Db/Ab', 'Ab7', 'Db'  
X:1
L:1/4
M:4/4
K:Db
"Db" F2"Ab" F E |"Bbm" D2"Fm" A2 |"Gb" B A A"Ab" G |"Db" F4 | F2 G A |"Gb" B2"Db" A2 | 
"Ebm7" G E F"Eb7" =G |"Ab" A4 |"Db" F2"Ab" F E |"Bbm" D2"Fm" A2 |"Gb" A _G"Bb7" G F |"Ebm" E4 | 
"Ab7" E2 F G |"Db" F E"Gb" D G |"Db/Ab" F2"Ab7" E2 |"Db" D4 |]  