An Algolian musician
The Algolians were a humanoid species native to the Alpha or Beta Quadrant. By the 24th century, they were members of the United Federation of Planets.
In 2366, they attended the Trade Agreements Conference on Betazed. (TNG: "Ménage à Troi") In 2367, they had a seat on the Federation Archaeology Council and attended the symposium on the USS Enterprise-D. (TNG: "Qpid")
StarTrek.com suggests that Algolians originate from the real star Algol, which is estimated to be about 93 Light year from Earth.