The 88 painted pianos spread throughout the five boroughs as part of the two-week "Sing For Hope Pianos" public art installation are coming together for a grand finale at Lincoln Center on Sunday.
The eight-hour event kicks off just after noon with a special performance by the cast of the Broadway musical "Once."
Performances will take place every hour, including one by the Sing For Hope Youth Chorus.
The finale comes just after 7 p.m., when all 88 pianos will be played in unison.
The pianos were painted by volunteer artists and placed around the five boroughs for public use.
After Sunday's performances, the pianos will be donated to under-served schools, health care facilities and community organizations.