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Wasn't looking blockchain specifically. I have Cantata (I don't know if it came with the Manjaro install or if I installed it at some point) but haven't set it up yet (the setup screen made me think too hard which is generally terrible first thing in the morning pre-coffee, can't be trusted to make good decisions then) and I recently downloaded Nuclear (probably because I didn't know I had Cantata to try first, either way it opened without a setup screen but I haven't got around to trying to add anything to it yet and it looks like it would only let me grab playlists which is mildly inconvenient).