Tilburg's Treurwilg — Dutch for 'weeping willow' — craft melodic doom/death metal that lives up to their arboreal name's mournful connotations since 2015. Their music pairs crushing heaviness with sorrowful melody, rooted in the city's thriving underground heavy music community.

Trevider is a groove/thrash/death metal/crossover band from Cabana, Spain, active since 2008. They merge groove, thrash, and death metal with crossover energy from rural Galicia.

Treviius is a symphonic black metal band from Rome, active since 2005. With two decades of activity, they are one of the more established symphonic black metal acts in the Roman metal scene.

Trewan from Rhineland-Palatinate craft black metal steeped in the Celtic and Germanic heritage of their western German homeland since 2021. Their name hints at old-world roots, channeled through atmospheric extremity from the Rhine Valley.

Tri State Corner are a boundary-crossing rock act with members from Germany, Poland, and Greece, distinguished by their innovative fusion of hard rock with the traditional Greek bouzouki. Over 600 live shows across 22 countries on three continents, the band has shared stages with Evanescence, Nightwish, and Accept, and worked with multi-platinum producers Fabio Trentini and Tony Bongiovi. Their trilogy of albums 'Historia,' 'Home,' and 'Hero' tells the band's multinational story through a unique lens of Mediterranean-inflected rock and roll.

Brussels technical death metal quintet formed in 2019 by musicians from Brazil, Italy, France, and Belgium, notable for their dual-vocal attack pairing Lorena Moraes and Lou-Indigo Caspar. Their debut EP Sem Papyrvs arrived in February 2023 featuring lyrics written in a mix of ancient Greek, Latin, and modern European languages, lending the material an arcane, ritualistic weight. The band's angular riffing and polyrhythmic precision place them firmly in the modern tech-death tradition.

Trial formed in 2007 in Trollhättan, Sweden, playing traditional heavy metal rooted in the NWOBHM and classic European metal of the 1980s. The quintet built a following through a series of increasingly refined studio albums — The Primordial Temple (2011), Vessel (2015), Motherless (2017), and Feed the Fire (2022) — before signing with Metal Blade Records. Their sound emphasizes melodic riffing, clean vocals, and songwriting discipline that sets them apart from the retro-metal revival acts of the same era.

Triangle Face is an experimental death metal band from Cambridge, formed in 2021. Their music pushes death metal conventions into experimental territory with unconventional compositions from the historic university city.

Triangle Theory is a sludge/heavy metal/hard rock band from Perth, Scotland, active since 2017. Their music blends the crushing weight of sludge with classic heavy metal and hard rock sensibilities from the Fair City.