Question: Are musicians Paul Cotton and Cedric Bixler-Zavala both members of a band?

full_context: Document 1: Cedric Bixler-Zavala: Cedric Bixler-Zavala (born November 4, 1974 in Redwood City, California) is a Grammy Award-winning American musician known for his work as frontman and lyricist of the progressive rock band The Mars Volta, and as frontman and occasional guitarist of the post-hardcore group At the Drive-In. Currently he is a singer in the band Antemasque, and also sings and plays guitar in his band Zavalaz. He has also played drums for a number of acts, including the dub act De Facto and more recently Big Sir and Anywhere.
Document 2: I Never Picked Cotton: "I Never Picked Cotton" is a song made famous by country music singer Roy Clark. Written by Bobby George and Charles Williams, the song was released in 1970 as the title track to the album released that same year. The song peaked at No. 5 on the "Billboard magazine" Hot Country Singles chart that summer.
Document 3: The Mars Volta: The Mars Volta was an American rock band from El Paso, Texas, formed in 2001. The band's final lineup consisted of Omar Rodríguez-López (guitar, producer, direction), Cedric Bixler-Zavala (vocals, lyrics), Juan Alderete (bass), Marcel Rodríguez-López (keyboards, percussion) and Deantoni Parks (drums). The band formed following the break-up of Rodríguez-López and Bixler-Zavala's previous band, At the Drive-In. They are known for their energetic live shows and their concept albums.
Document 4: Paul Dean (guitarist): Paul Warren Dean (born February 19, 1946 in Vancouver, British Columbia) is the lead guitarist for the Canadian rock band Loverboy which reached huge fame in the early 1980s.
Document 5: Paul Cotton (musician): Paul Cotton (born Norman Paul Cotton February 26, 1943 in Fort Rucker, Alabama) is an American guitarist and singer-songwriter, most notable as a member of the band Poco and as the writer of the international hit song from that band, "Heart of the Night".
Document 6: Richie Furay: Paul Richard "Richie" Furay (born May 9, 1944) is an American singer, songwriter, and Rock & Roll Hall of Fame member who is best known for forming the bands Buffalo Springfield with Stephen Stills, Neil Young, Bruce Palmer, and Dewey Martin, and Poco with Jim Messina, Rusty Young, George Grantham and Randy Meisner. His best known song (originally written during his tenure in Buffalo Springfield, but eventually performed by Poco, as well) was "Kind Woman", which he wrote for his wife, Nancy.
Document 7: Los Dregtones: Los Dregtones was a band from El Paso, Texas, led by Cedric Bixler-Zavala (vocals/drums), Ralph Jasso (guitar) and Jimmy Hernandez (bass). The line-up changed multiple times with Julio Venegas playing bass for a long duration while Hernandez was off at music school at the Atlanta Institute of Music in Atlanta, GA. Other members included Luis Prieto (Percussion), Brooks Miller (trumpet), Adam Young (drums), and Andrew McCoi (drums). In 1994, they released a demo recorded at Rosewood Studios by Mike Majors (produced by Sparta), titled "Five Song Alibi". The style of the album was not unlike what lead singer Cedric Bixler would later perform with The Mars Volta; psychedelic rock, with hints of salsa, reggae, and occasional Led Zeppelin-esque guitar riffs, with punk rock. The cover and insert art was drawn by Julio Venegas, which features a six armed serpent women with a third eye and long ugly hair, and a symbol on the end of its tail that would later be used by Cedric and Omar Rodríguez-López on The Mars Volta's stickers, shirts, and other merchandise. Guitarist Ralph Jasso would later play bass briefly for The Mars Volta.
Document 8: Zavalaz: Zavalaz is an American rock band from Los Angeles, California, formed in 2013. It features singer/guitarist Cedric Bixler-Zavala, guitarist Dan Elkan, bassist Juan Alderete and drummer Gregory Rogove.
Document 9: Poco: The Songs of Paul Cotton: Poco: The Songs of Paul Cotton is a compilation album consisting of songs by Paul Cotton of the band Poco, released in 1979.
Document 10: The Mars Volta discography: The discography of The Mars Volta, an American progressive rock group formed in 2001, consists of six studio albums, one live album, two extended plays, and nine singles. The final lineup of The Mars Volta consisted of the two founding members Omar Rodríguez-López on guitar and production, Cedric Bixler-Zavala on vocals and lyrics, along with Juan Alderete on bass, Marcel Rodriguez-Lopez on keyboards and percussion, and Deantoni Parks on drums.
Document 11: Under the Gun (Poco album): Under the Gun is the fourteenth album by the American country rock band Poco. Released in July 1980, "Under the Gun" was the followup to Poco's breakout album "Legend". "Legend" had been released in November 1978 on ABC Records just prior to that label's being bought out by MCA: in a June 7, 2013 interview with Rockin' Rich Lynch of SoundPress.net Radio Network, veteran Poco member Paul Cotton would state that MCA required that Poco audition prior to being allowed to record for MCA. Cotton - "we had to go over to a rehearsal hall and play in front of all the executives" who after hearing Poco perform "Under the Gun", a Paul Cotton composition referencing the pressure attendant on the audition, approved Poco's recording for MCA.
Document 12: Antemasque (band): Antemasque (stylized as ANTEMASQUE) is an American rock band formed in 2014 by former members of At the Drive-In and The Mars Volta, Omar Rodríguez-López and Cedric Bixler-Zavala. Their first album featured Red Hot Chili Peppers's Flea on bass and Dave Elitch on drums. Both Flea and Elitch had previously played with The Mars Volta. Omar's brother Marfred Rodríguez-López (formerly of Zechs Marquise) eventually joined as a permanent bassist with Blink-182 member Travis Barker taking over drumming duties.
Document 13: De-Loused in the Comatorium: De-Loused in the Comatorium is the debut studio album by American progressive rock band The Mars Volta, released on June 24, 2003, on Gold Standard Laboratories and Universal Records. Based on a short story written by lead singer Cedric Bixler-Zavala and sound manipulation artist Jeremy Michael Ward, the concept album is an hour-long tale of Cerpin Taxt, a man who enters a week-long coma after overdosing on a mixture of morphine and rat poison. The story of Cerpin Taxt alludes to the death of El Paso, Texas artist—and Bixler-Zavala's friend—Julio Venegas (1972–1996).
Document 14: Paul Franklin (musician): Paul V. Franklin (born May 31, 1954 in Detroit, Michigan) is an American multi-instrumentalist, known mainly for his work as a steel guitarist. He began his career in the 1970s as a member of Barbara Mandrell's road band; in addition he toured with Vince Gill, Mel Tillis, Jerry Reed and Dire Straits. He has since become a prolific session musician in Nashville, Tennessee, playing on more than 500 albums. He has been named by the Academy of Country Music as Best Steel Guitarist on several occasions. In addition to the pedal steel guitar and lap steel guitar, Franklin plays Dobro, fiddle, and drums, as well as three custom-built instruments called the Pedabro, The Box, and the baritone steel guitar.
Document 15: Keeping the Legend Alive: Keeping the Legend Alive is the 22nd album and 4th live album by the country rock band Poco. It was re-released in 2006 under the title "Alive In The Heart Of The Night." It includes original members Richie Furay, *George Grantham and Rusty Young, Paul Cotton who replaced Jim Messina in 1970 and Jack Sundrud a member since the 1990s (See concert poster at http://www.angelfire.com/rock3/deliverin/belcourt.htm).
ground_truth: yes