GrapheneOS installed, up to date. Accrescent is then installed, with no problems, then RiMusic, with no problems. Search for an artist, then a particular song, select play, no problems. However after 61 seconds it stops. Again and again, any artist any song, 60-61 seconds it stops. Several times I factory reset the phone and install the apps and yet again 60 seconds later RiMusic stops.
Now, I am about to delete it and forget RiMusic, unless some one may have had a similar problem and solved it!