Very true, whatever Stan wants Stan Getz. I toured with him from December 1979 to the end of 1980 when I had enough dealing with him and all of his personalities. They also used to say "Stan Getz, a nice bunch of guys!" Stan was my first big time touring gig and I learned a lot. Probably learned more about life than music, although the music was amazing and Stan was a brilliant artist. As far as his stage outfit is concerned, he was obviously trying to get "some" after the gig wearing shorts that short! The good old days.....
Back to the thread, first off George Mraz was one of my biggest influences as a bass player when I was young. To me truly one of the greatest ever, bar none. I used to hang with him a lot in NYC back in those days and would go hear him play all the time. He always sounded fantastic. In the Stan Getz video the bass sound is obviously piezo's under the bridge and they have it mixed very upfront in volume.
FWIW here are a few thoughts and observations from playing upright bass live on stage and in the recording studio for about 45 years. They are completely different things entirely. The only thing they have in common is that you are playing the same bass. Being in a recording studio is mostly a totally controlled environment, not all the time, but mostly. Depends on the isolation in the studio as to how much control over your sound you have. The more isolation the more control you have. Live on stage you have very little control of your sound as there are so many other factors involved in what your sound live is like. The stage, amps, speakers, gear, room size, PA, crowd size, indoor, outdoor, who you are playing with, what the music is, what the volume on stage is, how loud the band is, how close you are to the drummer, how loud the drummer is, how loud are the stage monitors of the other players, etc... on and on....
We always want the bass sound live to be real and sound like the bass you are actually playing, but that is impossible. The louder and bigger the music is on stage makes it even harder to have a real acoustic sound live on stage. For years and years we all keep trying to fine that happy medium on stage that allows your bass to sound like a bass and yet still have every note heard clearly and cleanly. In the studio you hear the sound of the bass through a mic. No amp, no pickup, just the acoustic sound in the air that the mic picks up. That is the sound we all love, the sound that comes out of your instrument. That sound is you, your hands, the strings you use, the bass you play, and the set up of the bass you play. That is not the sound you have live on a stage. You do hear your hands, your strings, the bass you play, your bass set up, but you hear no air, no finesse. You also hear your pickup, your chord, your amp, your pre-amp, your speaker cabinet, the soundman's eq, the monitors, the mains, the sound of the room, the feedback, the low frequency rumble of rooms resonating that are not tuned or designed for sound and certainly not bass trapped for low frequency, on and on. With that said when the piezo pickups came on the scene for upright bass players they were ground breaking because that have a much higher volume to feedback threshold than traditional bass pickups, they pick up more string so therefore they allow for more sustain, and they don't have the acoustic woof and muddy/unclear and unfocused sound of a lot of upright basses and what traditional bass pickups amplify from those basses. The made it so you didn't have to fight the bass to be heard. I always use multiple pick ups live or a blend of pickups and a mic to at least get some air and the best of both worlds, but it will never be what you get acoustically or in the studio live. So yes Georges bass sounds like piezo pickups with no air and acoustic sound at all, but listen to his note choices, his playing over chord changes, his intonation, him just being George Mraz. He was wonderful........