Vince Gill and George Jones each have scheduled late night television appearances for Monday (Nov. 13). In California for a West Coast tour, Gill will appear on The Tonight Show With Jay Leno to perform “Sweet Thing,” a track from his four-CD boxed set, These Days. Gill’s concert tour continues Tuesday in Bakersfield, Calif., before heading north for concerts in Washington and Oregon. … Jones, who recently appeared with Kris Kristofferson at New York’s Carnegie Hall, returns to the city for a performance on The Late Show With David Letterman. Jones’ roadwork resumes with a Tuesday appearance in Syracuse, N.Y.