Paul Langosch can tell many stories about traveling with an upright bass -- for which he will often purchase an extra airline ticket so the instrument can occupy the seat next to him.

"I once got put off an airplane to California because my bass was sticking up and blocking this man's view of the movie screen. I had to catch a later flight." Another time, traveling from Brussels to Paris, "We had to sneak the bass on this passenger train . . . and put it in a bathroom."

Langosch will perform with guitarist Paul Bollenback Wednesday at 9 p.m. at the Jarry Performing Studio, 1845 14th St. NW. Bollenback will offer a solo concert at the same location on Thursday, and both evenings will feature compositions by the guitarist.

Langosch puts up with the hassles because the vocalists he works with -- Tony Bennett, Mel Torme', Jon Hendricks -- will not hear of him using an electric bass guitar. Also, Langosch himself prefers the acoustic instrument.

"When you play a note on the electric bass, it really jumps out at you, it like punches you," said the Washington-based bassist. "With the acoustic bass the notes seem to engulf you rather than hit you over the head. For a lot of vocalists . . . it's very important to have the warmth of the acoustic instrument."