(1) Tt is an artist based in Brisbane, Australia, also known as Titee.
http://www.last.fm/music/Titee
http://titee.bandcamp.com

(2) tt is a German artist.

(3) TT is also a portuguese rap/r&b singer and composer

(4) TT is the pseudonym of Warpaint's Theresa Wayman. Her debut album 'LoveLaws' is due for release on the 18th May 2018 via Caroline. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.