- tT
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- TTab
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- TAETai
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- tTea
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- thatha
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- TweTwi
- TwiTwi
- TwiTwo
- TwoTWR
- TWRtyD
- tyDTyl
- TylTyn
- TynTys
- TysTzu
- Thile, Chris & Daves, Michael
- Thile, Chris & Mehldau, Brad
- Thill, Georges (French tenor)
- Thill, Vivi, Thill Vivi, Vivi Thill (Thill, Vivi, Thill Vivi, Vivi Thill)
- Thilo, Jesper (Danish sax player)
- Thimm, Philipp (cellist)
- Thin Az Lizzy
- Thin Dark Line
- Thin Ice (Italian punk band)
- Thin Lips
- Thin Lizzy
- Thin White Rope
- Thine
- Thine Eyes Bleed
- Things in Herds
- Things of Stone and Wood
- Things to Come
- Things, The (LA hard rock band)
- Thingy
- Thịnh Suy (Vietnamese Singer)
- Think About Cosmos
- Think About Life
- Think Again (American hardcore/punk band)
- Think Floyd (UK Pink Floyd tribute)
- Think I Care
- Think Optimistically (brony duo)
- Think Out Loud (soft rock)
- Think Tank (Dutch rock 'n' roll, key track "Together")
- Think Twice (Canadian jazz hip-hop producer Phil Kennedy)
- Thinkerbell
- Thinking Dogs
- Thinking Fellers Union Local 282
- Thinking Plague
- Thinkingmachine
- Thinkman
- Thinktank (Australian band)
- ThiNXx
- Thió, Josep
- Third Bardo, The
- Third Coast Percussion
- Third Day
- Third Day feat. All Sons & Daughters
- Third Day feat. Harvest
- Third Day featuring All Sons & Daughters
- Third Day featuring Bashta, Harvest
- Third Day featuring Grant, Natalie, Smith, Michael W., Tait, Michael
- Third Day featuring Williams, Karyn
- Third Degree, The
- Third Dimension Doorknob
- Third Ear Band
- Third Ending, The
- Third Eye Blind
- Third Eye Foundation, The
- Third Floor Studio
- Third Party (early 90’s pop-rap/euro house artist, song “My Girl in His Jeans”)
- Third Party (UK based house DJs, stylized Third ≡ Party)
- Third Party & Cicada
- Third Party feat. Holloway, Loleatta
- Third Party vs. Cicada
- Third Rail, The (60's garage rock (Run, Run, Run))
- Third Realm
- Third Root
- Third Sky
- Third to None
- Third Wave, The (60s/70s US lounge pop group)
- Third World (Jamaican reggae fusion band)
- Third-Rates, The
- Thirdmoon (Austrian Melodic Death/Black)
- Thirdstory
- Thirlwell, J.G. (musician, composer and producer)
- Thirsk, Kristy
- Thirst Planet
- Thirstin Howl III
- Thirsty Ear
- Thirsty Fish
- Thirsty Merc
- Thirteen Senses
- Thirteenth Hell Level (Italian Metal Band)
- Thirteenth Sun, The
- Thirty Day Notice
- Thirty Seconds to Mars
- Thirty Seconds to Mars feat. ASAP Rocky
- Thirty Seconds to Mars feat. Halsey
- Thirty Seconds to Mars feat. Ye
- This Age (Italian hip hop/rock group)
- This American Song (Erie, PA rock)
- This Ascension (Californian ethereal/darkwave)
- This Band (Philippine indie band)
- This Beautiful Mess (Dutch indie-rock band)
- This Beautiful Republic