20a. A part of chorus by jazz fan coming to disastrous end
CATASTROPHE
15d. Mainly pay heed to the right people in church offices
RECTORIES
23a. Fools runs into Cynthia
MORON
25a. Contract governing replacement choppers
INDENTURE
12a. Cockney's novel location for cricket ground
EARTH
1a. Easy, for example, to get illegal joint
REEFER
Parses for the above please.