Singer/songwriter/producer Kevin Rudolf's rocker croon is paired with an assortment of dance and hip-hop beats on his second album, "To the Sky." And while guest appearances from such acts as Lil Wayne (who performed on Rudolf's 2008 hit "Let It Rock"), Flo Rida, Birdman, Rivers Cuomo and Three 6 Mafia make for an enjoyable spin, Rudolf confuses the listener by refusing to focus his musical style in one direction. The artist congratulates himself on the opening hip-hop track "I Made It (Cash Money Heroes)," singing, "Told you to 'Let It Rock'/Now money's falling down from the sky." And over a subtle acoustic guitar riff and a fast drum machine beat on "Big Timer," he questions the path to fame. Elsewhere, Rudolf generates pleasantly uptempo dance cuts like "Must Be Dreamin' " (featuring Cuomo). But the artist's gritty sexual side appears on "Whatchu Waiting For," where he assures a would-be lover that he's sure to "hit the right spot."