With Elisa by KDE, you can browse your local music collection by genre, artist, album, or track, listen to online radio, create and manage playlists, display lyrics, and more.
tried to switch to it when I transitioned from Gnome to Plasma and gave up. it takes up to a minute to start up (!) as my library is on a network share, has spotty MPRIS support, it intermitently crashes just sitting there idle, and the radio player doesn't display artist and song. so went back to rhythmbox and I'll check back in a year or so.