The Pretty Brown Eyes singer and his professional partner Witney Carson failed to win over show judges and viewers with their samba, performed to the tunes of I Can't Wait to Be King from The Lion King, and they were shown the door after their elimination on Monday night (14Apr14).
Simpson admits he didn't expect to leave the competition so soon, but is excited to return to his pop career.
He tells Eonline.com, "I'm sad... mixed feelings. It's kind of like, one amazing experience is over, Witney and I are kind of sad about it, but at the same time, I can just get back to what I do... start working on the new album and move on to the next phase of my career."
And the 17 year old is planning to make full use of his new talents, adding, "I'm feeling as though now I can apply those things... to my own career, my own music."
Actress Elisha Cuthbert's ex-boyfriend, ice hockey player Sean Avery, and endurance swimmer Diana Nyad were the first two celebrities to be voted off season 18 shortly after its launch last month (Mar14), while Star Wars hero Billy Dee Williams was forced to pull out of the ballroom contest due to a chronic back problem.
Other stars still in competition include former Full House actress Candace Cameron Bure, former Wonder Years star Danica MCKellar and funnyman-turned-game show host Drew Carey.