Question: What is the record label for the performers of Bathtub Blues?

full_context: Document 1: The Underdog (Aaron Watson album): The Underdog is a 2015 studio album by Texas country music artist Aaron Watson. It was released on February 17, 2015 via Big Label Records. It debuted at number one on the "Billboard" Top Country Albums chart, selling 26,340 copies in its first week of release. The album has sold 82,900 copies in the US as of March 2017.
Document 2: Soppin' the Gravy: Soppin' the Gravy is an album by Mark O'Connor. It consists mostly of traditional Texas Fiddle music, with O'Connor's own piece, "Misty Moonlight Waltz", and an instrumental version of "Over the Rainbow". O'Connor can be seen on the cover with the white-painted fiddle that he used for competition. At the time of this album's release, O'Connor had won numerous fiddle championships, including a win in the National Old Time Fiddler's Contest Open division in 1979 and a 1975 win in the Grand Masters Contest in Nashville, Tennessee.
Document 3: Over and Under: Over and Under is an album by folk singer/guitarist Greg Brown, released in 2000 on the Trailer Records label, a brief departure from his normal Red House Records label.
Document 4: Folk Singer (album): Folk Singer is the fourth studio album by Muddy Waters, released in April 1964 by Chess Records. The album features Waters on acoustic guitar, backed by Willie Dixon on string bass, Clifton James on drums, and Buddy Guy on acoustic guitar. It is Waters's only all-acoustic album. Numerous reissues of "Folk Singer" include bonus tracks from two subsequent sessions, in April 1964 and October 1964.
Document 5: There's a Hippo in My Tub: There's a Hippo in My Tub is a 1977 children's album by Anne Murray. Though the album did not make any of the major charts in the U.S. or Canada, it was certified Platinum in Canada. The album was initially reissued in 1979 by Sesame Street Records entitled ""Anne Murray Sings for the "Sesame Street" Generation"". It was again reissued in 2001 in CD format by EMI Music Canada, including three extra songs not on the original album. It was produced by Pat Riccio, Jr.
Document 6: House music: In the late 1980s, Nu Groove Records prolonged, if not launched the careers of Rheji Burrell & Rhano Burrell, collectively known as Burrell (after a brief stay on Virgin America via Timmy Regisford and Frank Mendez), along with basically every relevant DJ and Producer in the NY underground scene. The Burrell's are responsible for the "New York Underground" sound and are the undisputed champions of this style of house. Their 30+ releases on this label alone seems to support that fact. In today's market Nu Groove Record releases like the Burrells' enjoy a cult-like following and mint vinyl can fetch $100 U.S. or more in the open market.
Document 7: Undercover (band): Undercover is an American Christian punk band based in Fullerton, California, formed in the early 1980s by Joey "Ojo" Taylor and James "Gym" Nicholson. Through more than two decades and a few lineup changes, the band released eight studio albums and two live albums, and were pioneers in what would later be called Alternative music in the Christian world. The band was known for the spiritual growth shown in their music as their career progressed; "CCM Magazine" once called them "the band that grew up in public."
Document 8: K. B. Blues: K. B. Blues is an album by guitarist Kenny Burrell recorded in 1957 and originally released on the Japanese Blue Note label in 1979. The tracks were reissued on CD as part of "" but incorrectly identified as being recorded in 1956.
Document 9: Blue Country Heart: Blue Country Heart is a Jorma Kaukonen studio album released in June, 2002. It was his first album on a major label since 1980's "Barbeque King". Kaukonen didn't write any new compositions for the album, and instead played mostly country-blues cover songs.The album features performances by Sam Bush, Jerry Douglas, Byron House and Bela Fleck, and was nominated for a Grammy award in 2003 for "Best Traditional Folk Album."
Document 10: Sibylle Baier: The songs that made up her album "Colour Green" were home reel-to-reel tape recordings Baier had made in Germany between 1970 and 1973. Some 30 years later, her son Robby compiled a CD from these recordings to give to family members as presents. He also gave a copy to Dinosaur Jr's J Mascis, who in turn passed it along to the Orange Twin label. Orange Twin released the album in February 2006.
Document 11: The Manhattan Transfer Meets Tubby the Tuba: The Manhattan Transfer Meets Tubby The Tuba is a children's studio album released by The Manhattan Transfer in 1995 on the Atlantic Records label. It features music by George Kleinsinger and stories by Paul Tripp. This is the group's only children's recording, offering a rendition of the 1945 children's classic that teaches the important lesson: "Be yourself; you can't be anybody else!"
Document 12: Downtown Blues: The Grammy-nominated Downtown Blues is Steve Allee's second album. This album contains music from the John Von Ohlen, Chuck Carter and Steve Allee Big Bands.
Document 13: Land of the Bottom Line: Land of the Bottom Line is the second album by contemporary folk singer-songwriter John Gorka. The album was also Gorka's major label debut for High Street Records/Windham Hill Records. The album was highly acclaimed by critics at the time, and continues to be cited by some as Gorka's finest work. The album's fifteen tracks and near hour-long length also provided an unusually large amount of music for a recording of that era. As "Sing Out!" editor Mark Moss noted in a review, the topics covered run "the gamut of John's favorite subjects: love, hard luck, local characters, and more."
Document 14: Under the Town: Under the Town is the second album by Australian folk singer-guitarist Holly Throsby. It was released on 20 July 2006 and peaked at No. 66 on the ARIA Albums Chart. At the ARIA Music Awards of 2006, Throsby was nominated in the 'Best Female Artist' category for "Under the Town".
Document 15: Bathtub Blues: Bathtub Blues is an album by folk singer/guitarist Greg Brown, released in 1993. It is directed towards children and uses a children's chorus on many of the songs.
ground_truth: Red House Records
sub_queries: Which artist or group performed Bathtub Blues? Answer: Greg Brown
Greg Brown >> record label Answer: Red House Records