Marsha sings both originals and covers.
Some of the covers include:

ETTA:
All I Could Do Was Cry
I'd Rather Go Blind
Tell Mama
At Last

BARBRA:
The Way We Were

ARETHA:
Respect

TINA: 
Proud Mary 

MISC:
Take Me To The King
This Christmas
Santa Baby
Summertime
Oh Happy Day
Amazing Grace