'NSYNC's 6 Best Non-Singles

Over their far-too-short career, *NSYNC released just 10 proper singles. But the boy band's three studio albums were packed with songs that could have been called up to the big leagues for a chance at the Billboard Hot 100.

*NSYNC's 'No Strings Attached' Turns 15: What's the Best Song on the Album?

Given the renewed *NSYNC fever -- thanks to Justin Timberlake sharing the first photo of the five guys in one place since their 2013 VMA performance, all gathered to celebrate JC Chasez's 40th birthday -- we're taking a closer look at their catalog to find the deep cuts that deserve a spot on your throwback playlist.

Below are our six favorite *NSYNC non-singles. (To revisit the band's mega-hits, check out all their singles ranked by chart performance here.)

"Up Against the Wall" (Celebrity)

"I Thought She Knew" (No Strings Attached)

"Do Your Thing" (Celebrity)

"I Just Wanna Be With You" (*NSYNC)

"The Two of Us" (Celebrity)

"It Makes Me Ill" (No Strings Attached)