<P> Their documentary movie, titled Backstreet Boys: Show' Em What You're Made Of, was released in theaters and online on January 30, 2015 in the U.S., on February 26, 2015 in UK and Europe, and on March 28 worldwide . The movie chronicles their entire career journey up to the making of their 2013 album In A World Like This . </P> <P> On April 10, 2015, band members Richardson and Littrell were inducted into Kentucky Music Hall of Fame . </P> <P> In August 2015, band members Carter, Dorough, and McLean filmed a movie that Carter wrote entitled Dead 7 . The film centers around a ragtag band of gunslingers operating during a post-apocalyptic zombie plague . The movie premiered on April 1, 2016 on SyFy channel . A free copy of the theme song "In the End" was released on March 28, performed by band members Nick Carter, AJ McLean and Howie D.; Joey Fatone and Chris Kirkpatrick from NSYNC; Jeff Timmons from 98 Degrees; and Erik - Michael Estrada from O - Town . The official physical DVD was released on June 7, 2016 . </P> <P> In October 2015, McLean revealed that the group were working on their ninth studio album . McLean said the band are working with producer Jacob Kasher, who has worked with Maroon 5 and Britney Spears . The band hopes to have the album done before the next Backstreet Boys cruise in May 2016 . </P>

Who was the lead singer of the backstreet boy