In pictures: United in song and grief

Some of the biggest names in American entertainment have taken part in a two-hour televised concert to raise money for victims of the US terror attacks.

Thousands of TV and radio stations around the world broadcast the star-studded telethon, America: A Tribute to Heroes, which took place simultaneously in New York and Los Angeles.

Billy Joel performs New York State of Mind with a fallen firefighter's helmet on his piano

Will Smith with Muhammad Ali, who told viewers that 'Islam is peace'

Singer Bruce Springsteen opened the event with a new song, My City in Ruins

Tom Cruise and Penelope Cruz as well as, back row, Sylvester Stallone took phone donations

Alicia Keys performs Someday We'll All Be Free

Tom Hanks, Patti Scialfa, Bruce Springsteen and Steven Van Zandt on the set