In 1958, Julius joined Martin Denny's band where he played marimba (replacing Arthur Lyman) as well as numerous other percussion instruments.
These musicians included, at one time or another, Roy Caton, Tony Terran, Pete Jolly, Lew McCreary, Nick Ceroli, Hal Blaine, Tommy Tedesco, Leon Russell, and Emil Richards.
The main lineup from 1965 to 1971 was Bernie Fleischer on reeds, Ervan "Bud" Coleman on guitar (replaced upon Coleman's death in 1967 by Charlie Chiarenza), Frank DeCaro on rhythm guitar, Dave Wells on trombone, Lee Katzman on trumpet, Curry Tjader on percussion, Mel Pollan on Fender bass, and Frank DeVito on drums.
The group would appear on stage dressed in sombreros and old clothes, with fake mustaches, smoking cigars, and drinking beer, all of which was regarded as humorously exaggerated Mexican stereotypes.
Seen by many as a marketing gimmick, the group rode the wake created by Herb Alpert and the Tijuana Brass and Sérgio Mendes and Brasil '66 in the musically fertile mid-1960s.
It featured Julius Wechter on marimba and three band alumni, Bernie Fleischer on reeds, guitarist Charlie Chiarenza and trombonist Dave Wells.