Variety Staff Follow Us on TwitterRob Thomas has signed a worldwide publishing deal with Round Hill Music, joining a roster than includes Trombone Shorty, Toro Y Moi and Bones UK, among others.A gifted songwriter, Thomas’ credits include two decades-worth of hits by Matchbox Twenty (including the No. 1s “Push,” “3AM,” “Bent,” “If You’re Gone” and “Unwell”), his own solo work and such classics as 1999’s Grammy Award-winning “Smooth” by Santana, on which he was a featured artist and co-writer.