Can I connect my Roland S-1 straight into my iPhone 15 to record videos?

This video is the result of connecting my Roland S-1 straight to my iPhone via USB, especially as lightning has now been replaced by USB. The answer is yes. Can you record using the stock iOS camera app? Yes you can, as you can monitor the audio using headphones that are plugged in to the s-1. Simple as that! I’ll try other instruments next. Enjoy my little jam.