Question: What role do Paul McCartney and Tanya Donelly share in common in terms of their artistic profession?
Context: "Feed the Tree" is a song by Belly, released as the band's first single from their debut album, "Star", in 1993.  It is also the band's biggest hit, reaching number one on the Modern Rock Tracks chart in the United States.  According to lead singer Tanya Donelly, the song is a metaphor about commitment and respect, with the tree being a place on a large farm where a family would be buried. The Blizzard of 78 is an American rock band from Boston and Providence.  Consisting of ex-Delta Clutch members, they currently have two albums released; the first being the critically acclaimed "Where All Life Hangs".  Tanya Donelly contributed a guest vocal to the album, and it won several Motif Magazine awards in 2007.  The Blizzard of 78 have played with, or opened for, Coldplay, Alex Chilton, Ronnie Spector, Snow Patrol, Jim Carroll, Tanya Donelly, Guster, Remy Zero and Throwing Muses.  The group once performed The Replacements' album "Tim" in its entirety. Lovesongs for Underdogs is the solo debut album by American singer Tanya Donelly, who had formerly recorded with Throwing Muses, The Breeders, and Belly.  It was released on August 9, 1997.  Two singles were released for promotion of the album.  "Pretty Deep" was released in July 1997, while "The Bright Light" was released in October 1997.  In the U.S both 4AD released singles were released in two parts, each including 2 newly released B-Sides.  "Pretty Deep" featured "Spaghetti", "Morna", "These Days" and "Influenza".  "The Bright Light" featured "Bury Me", "How Can You Sleep?" , "Life On Sirius" and "Moon Over Boston".  A music video for each single was produced and aired on Vh1 and MTV2.  Both videos differed highly in creative and artistic direction from previous Belly videos and exclusively featured Tanya solo, in movie like settings.  "Pretty Deep" and "The Bright Light" enjoyed heavy airplay on Triple A radio stations in the U.S Northeast.  "Lovesongs For Underdogs" peaked at #36 on the Official UK Albums Chart for 2 weeks upon its release.  The singles, "Pretty Deep" and "The Bright Light" peaked at #55 and #65 (the latter) for 2 weeks each upon their 2 CD Single releases. Whiskey Tango Ghosts is the third solo album by Tanya Donelly, released in 2004.  The album marks a departure from Donelly's previous pop work in favor of a country and folk-influenced sound.  Donelly has described the album as influenced by "a horrible war, a horrible administration, (and) a bleak, mean winter." Safari is a four song EP by The Breeders released in 1992 on 4AD/Elektra Records.  By the time of this release, Kim Deal had enlisted her twin sister Kelley to play guitar for The Breeders.  This is the only Breeders recording that features both Kelley Deal and Tanya Donelly. Sir James Paul McCartney, {'1': ", '2': ", '3': ", '4': "} (born 18 June 1942) is an English singer-songwriter, multi-instrumentalist, and composer.  He gained worldwide fame as the bass guitarist and singer for the rock band the Beatles, widely considered the most popular and influential group in the history of pop music.  His songwriting partnership with John Lennon is the most celebrated of the post-war era.  After the group disbanded in 1970, he pursued a solo career and formed the band Wings with his first wife, Linda, and Denny Laine. Tanya Donelly (born July 14, 1966, in Newport, Rhode Island) is an American Grammy Award-nominated singer-songwriter and guitarist based in New England who co-founded Throwing Muses with her stepsister Kristin Hersh.  She then went on to work in The Breeders and Belly in the 1990s.  In the late 1990s, she settled into a solo recording career, working largely with musicians connected to the Boston music scene. The discography of American alternative rock band The Breeders consists of four studio albums, one live album, three extended plays, ten singles and twelve music videos. Kim Deal, then-bassist of American alternative rock band the Pixies, formed The Breeders as a side-project with Tanya Donelly, guitarist of American alternative rock band Throwing Muses.  After recording a demo tape, The Breeders signed to the English independent record label 4AD in 1989.  Their debut studio album "Pod" was released in May 1990, but was not commercially successful.  After the revival of the Pixies and Throwing Muses in 1990, The Breeders became mostly inactive until the Pixies' breakup in 1993.  With a new lineup, The Breeders released their "Safari" EP in 1992, followed by their second studio album "Last Splash" in 1993.  "Last Splash" was The Breeders' most successful album; it peaked at number 33 on the United States "Billboard" 200 and was certified platinum by the Recording Industry Association of America in 1994.  The album spawned the band's most successful single, "Cannonball".  The single peaked at number 44 on the US "Billboard" Hot 100 and at number two on the "Billboard" Alternative Songs chart. Throwing Muses is an alternative rock band formed in 1981 in Newport, Rhode Island, that toured and recorded extensively until 1997, when its members began concentrating more on other projects.  The group was originally fronted by two lead singers, Kristin Hersh, and Tanya Donelly, who both wrote the group's songs.  Throwing Muses are known for performing music with shifting tempos, creative chord progressions, unorthodox song structures, and surreal lyrics.  The group was set apart from other contemporary acts by Hersh's stark, candid writing style; Donelly's pop stylings and vocal harmonies; and David Narcizo's unusual drumming techniques eschewing use of cymbals.  Hersh's hallucinatory, febrile songs occasionally touched on the subject of mental illness, more often drawing portraits of characters from daily life or addressing relationships. Belly is an alternative rock band formed in Boston, Massachusetts in 1991 by former Throwing Muses member Tanya Donelly (who was also in The Breeders).  The original lineup consisted of Donelly on lead vocals and guitar, Fred Abong on bass, and brothers Tom and Chris Gorman on guitar and drums respectively.  Although formed in Boston, the group's members are all from the Newport, Rhode Island area, and identify themselves as a Rhode Island band as opposed to a Boston one.
Answer: singer-songwriter