VIDEO: Meghan Trainor, Backstreet Boys, Hanson & More Perform on GREATEST HITS

Last night's GREATEST HITS on ABC celebrated the second half of the 1990s launched huge careers for the biggest names in pop, rap, hip-hop and rock music. The episode featured the greatest hits of the musical era from 1995-2000 with never-before-seen collaborations with Backstreet Boys & Meghan Trainor, Coolio & CeeLo Green, Jewel & Tori Kelly, LL Cool J & Wiz Khalifa and an unforgettable acoustic performance by Hanson. The episode also features John Legend's captivating rendition of Lauryn Hill's smash hits "Ex Factor" and "Doo Wop (That Thing)."

Watch performances from last night's show including:

Backstreet Boys & Meghan Trainor on Greatest Hits - I Want It That Way

Backstreet Boys perform 'Everybody'

Jewel performs her 1995 hit, "You Were Meant for Me," with Grammy-nominated artist Tori Kelly

The Hanson Brothers perform MMMBop!

Hosted by actor and comedian Arsenio Hall and country music star Kelsea Ballerini, GREATEST HITS is a new music series which highlights a five-year period celebrating the biggest hits from that time. Each week, iconic music artists, as well as today's music chart-toppers, will take the stage and perform the songs that defined the 1980s, 1990s and 2000s. The six-episode series will feature special solo performances, never-before-seen duets and incredible tributes.

Photo credit: ABC/ByRon Cohen