Can you stand on a double bass?
Interestingly, some double basses just really lend themselves to being played either sitting or standing. Some basses are constructed in such a way that touching the back with the leg (it's almost impossible to avoid this in any sort of seated position) will mute the instrument quite noticeably.
What is a person who plays the double bass called?
A person who plays this instrument is called a "bassist", "double bassist", "double bass player", "contrabassist", "contrabass player" or "bass player". ... The double bass is sometimes confusingly called the violone, bass violin or bass viol.