Question: Other than Willie Nelson, what artists inspired the title cut for the album "Waves of Grain"? 
Context: Willie's Place was a 15-acre truck stop and biodiesel processing plant located in Carl's Corner, Texas that was opened in 2005 and named after Willie Nelson.  The facility was originally built circa 1980 by Carl Cornelius and named Carl's Corner.  Willie's Place was closed for a time and then reopened in 2008 after a significant expansion.  Willie's Place had a gas station that was the first to sell Willie Nelson Biodiesel brand biodiesel, a restaurant that specialized in Southern cuisine, a convenience store and a 750-seat concert theater for performances.  The theater had a bar and a 1000 sqft dance floor, and various touring country western bands would perform there. Amber Waves of Grain is a live album by American country music artist Merle Haggard, released in 1985.  It was Haggard's third live album in four years and was recorded at the Hollywood Star Theater.  It features a mix of Haggard's big hits and other, more obscure tracks.  The title cut, written by Freddy Powers, is a paean to the American farmer, in keeping with the spirit of the Willie Nelson-spearheaded Farm Aid benefit, as does "Tulare Dust" and "The Farmer's Daughter."  The LP peaked at number 25 on the "Billboard" country albums chart. Willie Nelson's Fourth of July Picnic is an annual concert hosted by country music singer Willie Nelson.  Nelson was inspired to create the annual concert after his participation in the 1972 "Dripping Springs Reunion", that was hosted at Hurlbut Ranch in Dripping Springs, Texas.  As part of the lineup, Nelson performed on the third day.  The event failed to meet the expected attendance due to the concert being poorly promoted. "Yesterday's Wine" is the title track of the 1971 album of the same name by Willie Nelson.  The track was also written by Willie Nelson.  It later became a #1 duet for George Jones and Merle Haggard in 1982. Deena Burton (September 23, 1948 – April 3, 2005) was an American dancer, specializing in the field of Javanese and Balinese dance.  Burton was also the founder of Arts Indonesia.  She was also instrumental in the creation of Artists Inspired by Asia and Artists Inspired by Indonesia, expositional festivals of Asian and Indonesian theater, music, and dance, respectively.  She additionally was an adjunct faculty member at Eugene Lang College in New York, where she taught courses in Asian and World theater. Kimmie Rhodes (born March 6, 1954) is a singer-songwriter who has written multi-platinum selling songs.  Among the artists who have recorded her songs are Willie Nelson, Wynonna Judd, Trisha Yearwood, Amy Grant, CeCe Winans, Joe Ely, John Farnham, Waylon Jennings, Peter Frampton, Mark Knopfler and Emmylou Harris.  She has recorded and released a total of sixteen solo CDs, written and produced three musicals and published a novella/cookbook, served as an associate producer for a documentary, "They Called Us Outlaws" presented by the Country Music Hall Of Fame and produced radio documentary/music programming for her show "Radio Dreams", which focused on the history of American roots music and artists.  She has also appeared in multiple films and a theatre production, "Is There Life After Lubbock?"  Her songs have appeared on multiple television and film soundtracks.  She has established and released her own records on her label, Sunbird Music for over 25 years.  Kimmie's promotional tours created a solid fan base in the U.K., Ireland and Europe.  She has headlined with her band at festivals throughout the world and has appeared on many European and American TV and radio broadcasts and at Willie Nelson's Farm Aid concerts and July 4 Picnics.  Together with Willie Nelson she recorded two of her originals for his album "Just One Love" and a duet CD, "Picture in a Frame".  She lives and records in Austin and tours internationally with her son and producer/multi-instrumentalist, Gabriel Rhodes. To Lefty From Willie is the twenty-first studio album by country singer Willie Nelson.  Recorded in 1975, the album sat in the vaults of Columbia Records until 1977.  This album is Willie Nelson's tribute to fellow country singer Lefty Frizzell. Make Way for Willie Nelson is the fifth studio album by country singer Willie Nelson.  Due to his demanding schedule, producer Chet Atkins delegated the session to Felton Jarvis.  Nelson recorded the album, between March and June 1966 with session musicians, with the addition of members of his road band on the RCA Studio B. Farm Aid started as a benefit concert held September 22, 1985, in Champaign, Illinois, to raise money for family farmers in the United States.  The concert was organized by Willie Nelson, John Mellencamp and Neil Young, spurred on by Bob Dylan's comments at Live Aid earlier in that year that he hoped some of the money would help American farmers in danger of losing their farms through mortgage debt. Summertime: Willie Nelson Sings Gershwin is the seventieth studio album by American singer-songwriter Willie Nelson.  After being awarded the Gershwin Prize by the Library of Congress, Nelson recorded a set of pop standards written by George and Ira Gershwin.  The recording of the album was produced by Buddy Cannon and Matt Rollings.  It includes the duets "Let's Call The Whole Thing Off" with Cyndi Lauper and "Embraceable You" with Sheryl Crow.
Answer: John Mellencamp and Neil Young