Skokiaan.
Your featured musicians are Frank Scott at the Vox, Neil Levang on guitar, Richard Maloof on bass guitar, Bob Davis and Dave Edwards on clarinet, Johnny Klein on drums and Jack Imel at the marimba.

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Those Champagne Jazz Sessions of the 1960s
I do know that Johnny Klein and Keith Moon have something in common....
When The Saints Go Marching In
Go Johnny Go
Playing the drums for the Welk orchestra from 1951 to 1976, Johnny also drove the bus whenever the band and the musical family went out on their concert tours.
Here's a nice series of articles of him from the NDSU Libraries online
Johnny Klein
Johnny, of course, was also known as the maestro's second cousin. He played the sticks from 1951 to 1976, and later served as the band's music librarian. He was also quite a scholar, graduating with university degrees from both the University of Missouri and Southern California. Klein continued to play the drums as well, at the Welk Resort in Escondido and at night clubs until his passing in 1997.
Paul took over at the sticks in '76 and remained until the maestro retired the band and it's show in 1982. He has quite a bit of a msuical background, played with the band Kool-Aid Chemists which scored a R&B Top 30 hit, "Kool Aid" and is a popular as both a studio musician and jazz artist.
And when it comes to that awesome champagne rhythm; both guys have the beat!
Bang The Drum Slowly.....