Most of the tunes I find are found the day of the recording. Usually from UA-cam. Then I searched for sheet music.
The organ sample sets are loaded into Grandorgue VPO software and a Midiplus 61-Key MIDI Keyboard Controller i61 is my keyboard. Recorded with OBS studio. Edited with OpenShot. And all free except for $63 for the keyboard at the time of purchase 2017, on Amazon, $99 now.

My selections are limited due to Dupuytren's contracture. Fast music or complicated music won’t work because 3 of my fingers are contracted. I won’t get it fixed because I do not want to risk what I have been given. If you hear some mistakes, it is fingers getting in the way or just mistakes. Here is what it looks like while I am playing. ua-cam.com/video/0IZ5gv0-rDc/v-deo.html