Question: Which country and rock and roll artist had a cover featured on Clay Walker's eighth studio album, Fall, and was also in the musical group Los Super Seven?

Context paragraphs:
Clay Walker discography: Clay Walker is an American country music artist.  His discography comprises nine studio albums and a greatest hits album, as well as 31 singles. Walker's first four studio albums — "Clay Walker", "If I Could Make a Living", "Hypnotize the Moon" and "Rumor Has It" — are all certified platinum by the RIAA, and his greatest hits album and "Live, Laugh, Love" are each certified gold by the RIAA.  "Clay Walker" is also certified platinum by the CRIA, while "If I Could Make a Living" and "Hypnotize the Moon" are certified gold.

Los Super Seven (album): Los Super Seven is a studio album released by supergroup Los Super Seven.  It was released in September 15, 1998 by RCA Nashville.  Freddy Fender and Flaco Jiménez, both from Texas Tornados, formed Los Super Seven, along Joe Ely, Rick Trevino, David Hidalgo and Cesar Rosas (of the Los Lobos' fame), and Tejano vocalist Ruben Ramos.  The album peaked at number-one in the "Billboard" Regional Mexican Albums chart and reached top ten in the "Billboard" Top Latin Song chart.  "Los Super Seven" earned them the Grammy Award for Best Mexican-American Performance at the 41st Grammy Awards.  A portion of the proceeds of the album were destined to the National Council of La Raza a non-profit organization that represents Latino interests and causes.

Canto (Los Super Seven album): Canto is the second studio album by Latin supergroup Los Super Seven.  It was released in March 2001, under Legacy Recordings.

Fall (album): Fall is country music singer Clay Walker's eighth studio album, released in 2007 by Asylum-Curb Records.  Its first single was "'Fore She Was Mama", which reached #21 on the Hot Country Songs charts in mid-2007.  Following this song was the title track, which reached #5 on the same chart and became Walker's first Top Five country hit since "The Chain of Love" in 2000.  "Fall" was also covered by Kimberley Locke, whose own version was a single as well.  The third and final single from this album, "She Likes It in the Morning", peaked at #43.  Also included is a cover of Freddy Fender's "Before the Next Teardrop Falls", recorded here as a duet with Fender.  This cover is also Walker's first duet.

Doug Sahm: Douglas Wayne Sahm (November 6, 1941 – November 18, 1999) was an American musician from Texas.  Born in San Antonio, Texas, he was a child prodigy in country music but became a significant figure in roots rock and other genres.  Sahm is considered one of the most important figures in what is identified as Tex-Mex music.  He was the founder and leader of the 1960s rock and roll band, the Sir Douglas Quintet.  He would later co-found the Texas Tornados with Augie Meyers, Freddy Fender, and Flaco Jiménez as well as Los Super Seven.

She Likes It in the Morning: "She Likes It in the Morning is the title of a country music song written by Clay Walker and M. Jason Greene.  It was recorded by American singer Clay Walker on his 2007 album "Fall" album and released as the album's third and final single.

Freddy Fender: Freddy Fender (born Baldemar Garza Huerta; June 4, 1937 – October 14, 2006) was an American Tejano, country and rock and roll musician, known for his work as a solo artist and in the groups Los Super Seven and the Texas Tornados.  He is best known for his 1975 hits "Before the Next Teardrop Falls" and the subsequent remake of his own "Wasted Days and Wasted Nights".

Raul Malo: Raúl Francisco Martínez-Malo Jr. (born August 7, 1965 in Miami, Florida), known professionally as Raúl Malo, is an American singer, songwriter, guitarist and record producer.  He is the lead singer of country music band The Mavericks and the co-writer of many of their singles, as well as Rick Trevino's 2003 single "In My Dreams".  After the disbanding of The Mavericks in the early 2000s, Malo pursued a solo career.  He has also participated from 2001 in the Los Super Seven supergroup.  The Mavericks re-formed in 2012 and continue to tour extensively.  In 2015 they won the Americana music award for duo/group of the year.

Los Super Seven: Los Super Seven is a predominantly Latin American supergroup which debuted in 1998.  According to Allmusic's Stephen Thomas Erlewine, "Los Super Seven isn't a band, per se -- it's a collective, organized by manager Dan Goodman, who comes up with a concept for each of the group's albums and assembles a band to fit."  The collective has issued three albums to date, with wildly varying personnel; no one player features on all three releases with the exception of Ruben Ramos and Rick Trevino.

David Hidalgo: David Kent Hidalgo (born October 6, 1954, in Los Angeles) is an American singer-songwriter, best known for his work with the band Los Lobos.  He is also a member of the supergroup Los Super Seven and of the Latin Playboys, a side project made up of some of the members of Los Lobos.  With Mike Halby of Canned Heat, he formed another band, Houndog, as a side project.  He also appeared on national television in the U.S., backing Tom Waits.

Supporting paragraphs: Fall (album) Freddy Fender
Answer: Freddy Fender