The Ventures
"$1,000,000,000 Weekend" (Vinyl)

If I had to file this stylistically in my collection it'd go right next to the prime-era Herb Alpert and the Tijuana Brass. There's something that just sounds "right" about these recordings.
They're fun to listen to, they're oddly contemporary and yet sublimely innocent. You can just see a bevy of teenagers twisting in their parent's basement to the hi-fi playing the Ventures' instrumental covers of mop-haired Beatles tunes.

The Ventures remain the world's best-selling instrumental group which is no small accomplishment. I'm less familiar with anything they've done past the 60's-70's, but even then their sensitivity and creativity was enough to get you to listen to their version of "Respect"