Superstar R&B artist Lionel Richie, whose "Tuskegee" duets album was the top-selling album for the first half of 2012, has signed on as the mentor for the grand-prize winner of the annual NSAI Song Contest. Now in its 13th year of competition, the contest will run through Oct. 31, 2012. Aspiring songwriters in any genre are encouraged to send their best songs, which will be judged by a panel of experts in a variety of categories including the Lyric-Only category added last year. For more info, visit http://nsai.cmt.com.