Are you keeping up with Good Morning America's annual Summer Concert Series? Well, we're trying!

Last Friday; we're confused because Jennifer Lopez was scheduled to perform on the Concert Series but Good Morning America pulled her out and replaced her with Jason Derulo. Derulo got a lot negative reviews of his performance due to it was hot; and it was out of breath while trying to sing live and dance at the same time.

Derulo performed an medley of his past hits and also performed his latest hit 'The Other Side' from his forthcoming album 'Tatoo' due out in September.

Re-live the moments of Derulo below.

Tomorrow the Disney Star and Stars Dance icon; Selena Gomez is schedule to take the Good Morning America's Concert Series stage and we are looking for her to promote songs from her newly released album 'Stars Dance,' as she also prepares for her 'Stars Dance' Tour. You see the rest of Good Morning America's Summer Concert Series line-up here.