Question: Are Mazzy Star and Team Sleep both American bands?

Context articles: Trees Dallas
Team Sleep
Team Sleep (album)
So Tonight That I Might See
Fade into You
She Hangs Brightly
Happy Nightmare Baby
Barzin
Mazzy Star discography
Mazzy Star

Trees first opened its doors as a venue in May 1990.
 Named for its trunk-like support beams, Trees hosted bands including Nirvana, Radiohead, Mazzy Star, and The Afghan Whigs during its initial run as a venue before the club closed in May 2005.
 It was reopened on August 14, 2009 by Clint Barlow, former drummer for Vanilla Ice and spouse Whitney Barlow.
 Since its resurrection, the venue has seen acts including Hiatus Kaiyote, Matt Corby, Charlie Puth, Robert DeLong, Charli XCX, and Jess Glynne.
Team Sleep is an American experimental alternative rock/post-rock group led by singer/guitarist Chino Moreno.
 Moreno is better known for fronting the Sacramento-based alternative metal band Deftones.
 Other current members include guitarist Todd Wilkinson, turntablist DJ Crook, bass guitarist/keyboardist Rick Verrett, drummer Gil Sharone and bassist Chuck Doom.
Team Sleep is the eponymous debut studio album by American alternative rock band Team Sleep, largely produced by Greg Wells (Rufus Wainwright, Creeper Lagoon, and Mika).
 It was released in Europe on May 9, 2005 and a day later in the United States through Maverick Records.
So Tonight That I Might See is the second studio album by the American dream pop band Mazzy Star, released on October 5, 1993.
 The album's first track, "Fade into You," was the band's only single to make the "Billboard" Hot 100 chart, peaking at #44.
 The song also charted at #48 on the UK Singles Chart.
 Pitchfork listed "Fade into You" at #19 on their Top 200 Tracks of the 1990s list.
"Fade into You" is a song by rock group Mazzy Star from their album "So Tonight That I Might See".
 The song was written by lyricist Hope Sandoval and composer David Roback, who also served as producer.
 It reached number three on the Billboard Modern Rock chart in 1994, and is Mazzy Star's only single to make the "Billboard" Hot 100, peaking at number 44.
 The song also charted at number 48 on the UK Singles Chart.
She Hangs Brightly is the debut studio album by American dream pop band Mazzy Star.
 It was released in 1990 on Rough Trade Records, following the demise of David Roback's previous band Opal.
 The album was rereleased by Capitol later that same year.
 The first track "Halah" was released as a single and reached #19 on the Billboard Alternative Songs chart.
 It showcases the band's trademark effect with haunting guitar work and lyrics, and Hope Sandoval's detached vocals.
 David Roback's Robby Krieger-inspired psychedelic blues slide guitar style can be heard on the song "Free".
 "Ghost Highway" is another psychedelic rock track, with a fast rhythm.
 This song dates from the band's days as Opal and was initially slated to be the title track of Opal's second album.
 While not a commercial success, this album did establish Mazzy Star as a unique band with a unique sound.
Happy Nightmare Baby is the debut album by the American band Opal, released in 1987 by SST Records.
 It was the only album released by the band while together, singer Kendra Smith leaving during the tour to promote it, to be replaced by Hope Sandoval, the band evolving into Mazzy Star.
Barzin is a Canadian singer-songwriter known for his slow and melancholic songs.
 Barzin has released four albums in his career, and his style has been compared to such bands as Mojave 3 and Mazzy Star.
The discography of American alternative rock band Mazzy Star consists of four studio albums and ten singles.
 The group formed in 1989 from Opal, with guitarist David Roback and bassist Kendra Smith.
 When Smith left the band, she was replaced by vocalist Hope Sandoval.
 Mazzy Star's first studio album was "She Hangs Brightly", released in 1990 on Capitol Records.
 It was certified gold in the United States and spawned two singles, "Halah" and "Blue Flower."
Mazzy Star is an American alternative rock band formed in Santa Monica, California, in 1989 from the group Opal, a collaboration of guitarist David Roback and bassist Kendra Smith.
 Roback's friend Hope Sandoval became the group's vocalist when Smith left the band.