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You can use the Adafruit ADG728 1-to-8 Analog Matrix Switch to connect between eight analog signals, much like a set of 8 mechanical switches. These chips tend to be tiny surface mount parts, so this breakout will let anyone use the ADG728 switch for signals up to 5V, without fiddly soldering.
The Adafruit ADG728 1-to-8 Analog Matrix Switch guide has everything you need to get started with using this breakout. There’s pages for overview, pinouts, CircuitPython, Arduino and resources for download.
Read more at Adafruit ADG728 1-to-8 Analog Matrix Switch