I think the most underrated are the ones from "A.K.A." album, from the released Ones:
Amazing Pop Song produced by Max Martin, that deserved a music video full of color, neon colors, a classic Pop Video, with a dance break, not the "Serious" Music Video they did for this song, that video would be perfect for "Let It Be Me".
First Love, should have had a music video like Beyonce's "Blow"
-I LUH YA PAPI:
A different Lead song from Jennifer, not another RedOne Song Featuring Pitbull, a HOt Music Video with a Good Strategy, but they never released on Radio, I think this song could work with RihannaFrom the no-Singles Ones:
-LET IT BE ME:
Amazing Power Ballad, Good Production, her Best Vocals ever, Jennifer should have done a music video like thet one she did for "First Love"
Amazing song, one of her best no-single track