Mariah Carey/Mimi/The Elusive Chanteuse has done it again. She recently celebrated the 15th anniversary of her record-breaking Emancipation of Mimi comeback album. However, the 12th anniversary of its follow up, E=MC2 is making headlines now. The album, which still marks her highest opening sales week for any of her albums to date – 463,000 copies – has just re-entered the Billboard Top 200 Albums chart and is currently #1 on the US iTunes chart.

In celebration of the album, which spawned the #1 Pop hit, “Touch My Body”, here are 4 songs from the album that should have been lifted as singles. Following the success of the album’s lead single, “Bye Bye”, “I’ll Be Loving You Long Time” (still scratching my head on why this one wasn’t a hit), and “I Stay In Love” were released as official singles, with moderate success.

“Migrate” featuring T-Pain. Mariah Carey herself wanted this track to be a single. Although it wasn’t one of my favorites from E=MC2, it would have been a sure-fire hit. The unlikely pair of her and T-Pain actually meshed well here. The uptempo melody would have been a nice transition as a club-ready second single to ride the wave of “Touch My Body”.

“Side Effects” was less celebratory than much of the album. The song detailed Mariah Carey’s caution about falling in love, as a result of past heartbreak. Lyrically, she walks us through all of the troubling thoughts she has about love. After just one listen, it’s easy to see why she’s so hard to fall. Despite its dark mood, this song would have fit quite nicely on her Caution album.

“I’m That Chick”. This upbeat fan favorite is probably the one that everybody thinks got away. The lyrics aren’t particularly deep or noteworthy, but most people love a good ego boost – and that’s exactly what this song did for many female listeners. Rod Temperton and Johnta Austin co-wrote this Stargate produced (and written) track.

“Last Kiss”. Mariah Carey is the queen of “you still love me and won’t ever forget me” ballads. Just go down the list of “Always Be My Baby,” “My All,” “We Belong Together”, and “Don’t Forget About Us”. Oh, and it was produced by Jermaine Dupri, who collaborated on many of her biggest hits (and 3 of the 4 previously mentioned tracks). This seemed like a no-brainer for a single, but apparently her label didn’t think so.

Relieve some of the brightest moments of E=MC2 below. What are some of your favorite tracks from the album?