This is what we found on Wikipedia regarding the Bob Marley Birthday Celebration:

Bob Marley and the Wailers (previously known as the Wailers and prior to that the Wailing Rudeboys, the Wailing Wailers and the Teenagers) were a Jamaican ska, rocksteady and reggae band. The founding members, in 1963, were Bob Marley (Robert Nesta Marley), Peter Tosh (Winston Hubert McIntosh), and Bunny Wailer (Neville Livingston).

During 1970 and 1971, Wailer, Marley and Tosh worked with renowned reggae producers Leslie Kong and Lee "Scratch" Perry.

Before signing to Island Records in 1972, the band released four albums. Two additional albums were produced before Tosh and Wailer departed from the band in 1974, citing dissatisfaction with their treatment by the label and ideological disagreements. Marley continued with a new lineup, which included the I-Threes, and went on to release seven more albums. Marley died from cancer in 1981, at which point the group disbanded.

The Wailers were a groundbreaking ska and reggae group, noted for songs such as "Simmer Down", "Trenchtown Rock", "Nice Time", "War", "Stir It Up", "Get Up, Stand Up" and "I Shot the Sheriff".