On YT, there's a video from August 31 2018 of "Manuel M. Ponce: Sarabande in G (Alberto Ubach, guitar)". As of this morning, it only has 6 views. I'm 2 of them.
Very skilled playing, and a fine composition. No indication of the source. It sounds more piano-like than guitar-like, so my gut feeling is that it is an arrangement. The performer is quite good.
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Salt Lake City, UT
First person to complete the Delcamp "Let's Learn Sor's Opus 60" project