Host Derk Richardson presents Ancient Future, led by scalloped-fretboard guitarist Matthew Montfort, with Mariah Parker (santur, piano) and Vishal Nagar (tabla), as the world fusion group celebrates its 38th anniversary (with an upcoming concert in the Trinity Chamber Concerts series, on Feb. 11 in Berkeley). Then, singer Jenna Mammina and guitarist Rolf Sturm take over the studio for a few live jazz and pop tunes.