Culminating pop-bop sensibilities, Joshua Redman, Sunday, April 2, at the Gothic Theatre, is a tenor tour de force. Redman's maturity as a leader and his sophisticated arrangements have earned him unprecedented accolades from the jazz community since 1991, when he won the prestigious Thelonious Monk Institute of Jazz Competition. Now, at 31, Redman has released his seventh solo work, Beyond, and is on his way to becoming one of the most important contemporary jazz saxophonists. One need only listen to the opening track of Beyond to discover why. "Courage" is a hauntingly seductive and rhythmically complex piece -- a 13/4 time signature for the aficionados out there -- yet richly textured with a simplistic harmony that breathes passion. Listeners will discover that live as well as in the studio setting, the quartet does not follow the theme-solo-theme formula. Rather, it interprets and shadows the lead performer.