Your link doesn’t work. But I assume you are talking about this label? I looked at the first artist and I found the artist’s music on iTunes. Everything that Apple sells on the iTunes Music Store has been DRM free AAC or ALAC (Apple lossless) since 2009.
I remember trying to use music I had bought in a slideshow that year and finding out that I couldn’t load tracks with DRM into the editor I was using; it was very frustrating.
If the source and target are both lossless, then yes. ALAC was available in iTunes since 2004 AFAIK.
Caveat: CDs were 44.1/16 so if the original files had more bit depth, they would require downsampling. Technically lossy, but not "compression" per se. But AFAIK, iTunes was also 44.1/16.
Is this true? Can you show me where I can get DRM-free releases from Mountain Fever?
Better yet, can you add that information here? https://pickipedia.xyz/wiki/DRM-free