Rx: You want to play in tune. Consider hand shape, shifting, and playing with a drone.
Rx: You do not trust the sound that comes in through your ears. Perhaps you have hearing loss or tinnitus. You still want to play in tune.
Rx: Improve intonation in the area below the octave, just before getting to thumb position.
Rx: Improve accuracy and confidence in intonation, so you are not guessing at where notes are on the upright bass.
Rx: Once you get through the transition, play in tune up into thumb position.
Rx: Play in tune into the transition to thumb position..
Rx: Poor intonation that isn’t related to shifting. Also, lack of speed. A mirror or video is useful to see if your noting hand is collapsing which would lead to this problems.
Rx: Getting in tune on the double bass.
Rx: Playing in the thumb position cleanly and in tune.
Rx: Making larger shifts in tune.
Rx: Executing short distance shifts through finger replacement