Okay so I'm still on High Sierra and considering upgrading my OS. HS is working fine for me but I'm sure at some point it would be advised to upgrade. I'm using a 2015 MBP 15". One of my biggest concerns is the new Music app. I do not have an Apple Music subscription and still prefer to purchase my music mainly via CDs. Though I am also curious where I can buy music online in lossless or uncompressed formats which would be better than the lossy files from the iTunes Music Store. I have over 9,400 songs on my Mac using 123GB of storage space. I'm still re-importing my CDs in ALAC. I'm just wondering how the new Music App handles those with "traditional" libraries. Is the app an overall good upgrade?