Seems You're working on Alpha builds these days. That's Good news, But, fix MusicFx crash on long pressing MusicFx option first, later all others. I am uninstalling it, checking whether there is an update or not if yes, Download it again check for MusixFx to work, as usual it won't work. disappointment, Uninstall it again. Seems like I bought this app only for that only and can't live without that. Can you do something in next update. Don't forget me and For all other bass lovers. Do it.
Device is Mi A1 is running on Stock Oreo 8.1(not rooted)