What song was released as the lead song of tje black eyed6 peas fith album the e.n.d. and was number 1 in the Billboard hot 100?
I Gotta Feeling:  The song was released on June 23, 2009 and debuted at number two on the Canadian and "Billboard" Hot 100 on the week of June 27, 2009, behind the group's "Boom Boom Pow", making the group one of 11 artists who have occupied the top two positions of the "Billboard" Hot 100 at the same time.
i don't know