Mort Weiss identified himself in a comment here as “the world’s greatest out-of-work Jewish bebop clarinet player.†That may be, but he found work one night not long ago at Steamers jazz club in the Los Angeles area. Weiss led a band with Sam Most, tenor sax and flute; Ron Eschete, guitar; Luther Hughes, bass; and Roy McCurdy, drums. The tune is Jerome Kern’s “I’m Old Fashioned†at a lovely, relaxed tempo. Most’s two tenor choruses channeling Lester Young are as enjoyable as watching him dig Eschete.