Develop musical pieces by incorporating the given chord changes.
'C', 'Gm', 'Am', 'Bb', 'C', 'Gm', 'Am', 'Bb', 'C', 'Gm', 'Am', 'Bb', 'C', 'Gm', 'Am', 'Bb', 'Am', 'Bb', 'Dm', 'C', 'Bb', 'Am', 'Dm', 'Dm', 'C', 'Bb', 'Dm', 'Dm'  
X:1
L:1/16
M:2/4
K:Ddor
|: A |"C" dcAG"Gm" F2DF |"Am" E2CE"Bb" F2DA |"C" dcAG"Gm" FDFG |"Am" Addc"Bb" defe | 
"C" dcAG"Gm" F2DF |"Am" E2CE"Bb" F2DA |"C" dcAG"Gm" FDFG |1"Am" Ad2c"Bb" d3 :|2"Am" Ad2c"Bb" d2 |: 
 de |"Dm" fede fagf |"C" ecgc acgc |"Bb" fede fagf |"Am" eBcB"Dm" Adde |"Dm" fede fagf | 
"C" ecgc acgc |"Bb" fedf edcB |1"Dm" Ad2c d2 :|2"Dm" Ad2c d3 |]  