Tripping House is a doom metal project formed in 2023, crafting slow, oppressive compositions that lean into the genre's most hypnotic and suffocating tendencies.

Tripping the Mechanism is a doom/sludge metal band from North Charleston, South Carolina, formed in 2013, combining lumbering tempos, corrosive guitar tones, and a desolate Southern heaviness.

Troglodyte Dawn is a Phoenix, Arizona band formed in 2014 that blends doom metal with ambient and rock elements, creating slow, meditative compositions that drift between crushing heaviness and atmospheric drift.

Troll Teeth is a doom and stoner metal band from Atlantic City, New Jersey, formed in 2014, delivering slow, heavy riffs rooted in the psychedelic underground tradition of the genre.

Trouble formed in Aurora, Illinois in 1979 and are widely recognized as one of the founding acts of American doom metal, often grouped alongside Candlemass, Pentagram, and Saint Vitus. Their first two albums, Psalm 9 (1984) and The Skull (1985), are landmark recordings that grafted Black Sabbath's heaviness onto a spiritual lyrical framework. The band signed to Rick Rubin's Def American label for their 1990 self-titled album and continued recording across eight studio releases.

Portland, Oregon psychedelic doom/sludge metal band active since 2012, layering crushing low-end weight with hazy, hallucinatory atmospheres in the Pacific Northwest tradition of slow and heavy music.

Tacoma, Washington drone/doom/post-metal duo active since 2014, sculpting monolithic, slowly evolving soundscapes from feedback and repetition in the tradition of the Pacific Northwest's most extreme slow music.

San Diego, California death/doom metal band formed in 2023, merging the sepulchral atmosphere and mournful pacing of doom with the brutality of death metal in the style of the genre's earliest practitioners.

please update this band