There are several artists known as Tris

(1)Tris is a Indie Pop / Indie Rock artist whit Folk and Synth elements, she was born in 1999, Kent (South England)
https://trismakesmusic.bandcamp.com
https://www.youtube.com/channel/UCfoJWwFkWtm3gj6WhBbe3nA

(2)TRIS is a Latvian indie rock band from Rīga, Latvia.

Members:
Mārtiņš Vilnītis - guitars, vocals;
Anastasija Tetarenko - synthesizers, vocals;
Jānis Irbe - bass;
Artūrs Cukanovs - drums.

http://www.facebook.com/bandtris Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.