@@han.soedira Thank you for the fast reply. I checked online and realized the Apple camera adapter has a USB C aka USB A port, which makes it easy to find cables, but I have a Yamaha PSS-A50, and I am pretty sure it has a micro USB port, unless they have newer ones with USB C. I also have a Roland Go:Keys and a Casio CT-S1 that both have a micro USB port. The Casio also has a USB A port for the BT dongle. I wonder if that works as a regular USB port, too. Btw, have you seen the RU-vid channel by Masataka Kono? He is an awesome jazz pianist and keyboard that is very entertaining and amusing. He also s video that shows how great this keyboard is, and how easy it is to use as a controller for a Daw. He uses multiple keyboards in interesting ways. Such a great keyboards player, arranger, and probably the best on the PSS-A50. Another great channel is my friend from Singapore, Jeremy See And the awesome young multitalented Yohan Kim from Korea.
Duh ? I have an iPad, a Bluetooth speaker, a camera adapter but I have never used them connected at the same time with a toy keyboard to make a multi track song.. I learned “a lot”. Even read about the software he is using.