Question: Who has been a member of more bands, Tom Petty or Bobby Gillespie?

full_context: Document 1: Tom Petty discography: This is the discography of Tom Petty, an American singer, songwriter and guitarist. Petty has released thirteen studio albums as the lead singer of Tom Petty and the Heartbreakers in addition to three solo albums.
Document 2: Tom Paxton: Thomas Richard Paxton (born October 31, 1937) is an American folk singer-songwriter who has had a music career spanning more than fifty years. In 2009, Paxton received a Grammy Lifetime Achievement Award. He is noteworthy as a music educator as well as an advocate for folk singers to combine traditional songs with new compositions.
Document 3: Sonic Flower Groove: Sonic Flower Groove is the debut album by Scottish indie rock band Primal Scream, released on 5 October 1987. "Sonic Flower Groove" featured psychedelic, Byrdsy jangle pop and was the only Primal Scream album to feature founder member Jim Beattie (credited as 'Jim Navajo').
Document 4: Jeff Lynne: Jeffrey Lynne (born 30 December 1947) is an English songwriter, composer, arranger, singer, multi-instrumentalist and record producer who gained fame in the 1970s as the lead singer and sole constant member of Electric Light Orchestra. In 1988, under the pseudonyms Otis Wilbury and Clayton Wilbury, he co-founded the supergroup Traveling Wilburys with George Harrison, Bob Dylan, Roy Orbison and Tom Petty.
Document 5: Robert Smith (musician): Robert James Smith (born 21 April 1959) is an English singer, songwriter and musician. He is the lead singer, guitarist, lyricist and principal songwriter of the rock band the Cure. He is the band's only constant member since its formation in 1976. He has also played guitar in the band Siouxsie and the Banshees. Smith is a multi-instrumentalist, known for his unique stage look and distinctive voice.
Document 6: Tom Waits: Thomas Alan "Tom" Waits (born December 7, 1949) is an American singer-songwriter, composer, and actor.
Document 7: Primal Scream: Primal Scream are a British rock band originally formed in 1982 in Glasgow by Bobby Gillespie (vocals) and Jim Beattie. The current lineup consists of Gillespie, Andrew Innes (guitar), Martin Duffy (keyboards), Simone Butler (bass) and Darrin Mooney (drums). Barrie Cadogan has toured and recorded with the band since 2006 as a replacement after the departure of guitarist Robert "Throb" Young.
Document 8: Bobby Gillespie: Robert Bernard Andrew "Bobby" Gillespie (born 22 June 1962) is a Scottish musician and singer-songwriter. He is the lead singer and founding member of the alternative rock band, Primal Scream. He was also the drummer for The Jesus and Mary Chain in the mid-1980s.
Document 9: Highway Companion: Highway Companion is the third solo studio album by American singer-songwriter Tom Petty. It was released on July 25, 2006, and charted at #4 on the "Billboard" 200 album chart. The album was produced by former Traveling Wilburys bandmate Jeff Lynne, who also produced Petty’s highly acclaimed first solo album, "Full Moon Fever", as well as the Heartbreakers' next album "Into the Great Wide Open". Petty released the album through Rick Rubin's American Recordings label and Warner Bros. Records, where Petty has had a record contract since his second solo album, "Wildflowers" (which was produced by Rubin). The tracks "Saving Grace" and "Big Weekend" were released July 4, 2006 on the iTunes Music Store. It ended up being Petty's only album for American Recordings, as that label moved to Columbia Records distribution in 2007; Warner Bros. retained the rights to Petty, eventually reassigning him to subsidiary label Reprise Records.
Document 10: Velocity Girl (song): "Velocity Girl" is a song by British alternative rock band Primal Scream, originally released as the B-side to their second single, "Crystal Crescent", in 1986. Shortly preceding its release, Primal Scream’s frontman, Bobby Gillespie, left his post as the drummer of The Jesus and Mary Chain, recording only one album with them, the influential noise pop release "Psychocandy" (1985). Disentangled from their major label "whirlwind", he resumed activity with the lesser known Primal Scream, proceeding to, as "Pitchfork Media" later described it, "reduce the pop song to its subatomic essence: quick, breezy, quirky, and above all, exquisitely small" with "Velocity Girl".
Document 11: Tom Rapp: Thomas Dale "Tom" Rapp (born March 8, 1947) is an American singer and songwriter, best known as the leader of Pearls Before Swine, the psychedelic folk rock group of the 1960s and 1970s. More recently he has practiced as a lawyer.
Document 12: Murray Dalglish: Murray Dalglish was the original drummer for The Jesus and Mary Chain from their formation in early 1984 until November 1984 when he was replaced by Bobby Gillespie. Aged 16 when he joined the band, Dalglish played a two-piece drum kit, which he did whilst standing up; this style would later be carried on in Gillespie's playing. His drumming can be heard on the band's first single "Upside Down", along with its B-side, the Syd Barrett cover "Vegetable Man". He was reportedly kicked out of the band as his father demanded that Dalglish be given more money, despite the fact that the band at the time was making little, if any, money at all.
Document 13: Darklands (album): Darklands is the second album by Scottish alternative rock band The Jesus and Mary Chain. Unlike their previous album, drum machines were used in place of drummer Bobby Gillespie, who had left to pursue a successful career as the frontman with Primal Scream. The album marks a turning point in the band's music, going from the noise-pop of "Psychocandy" to a more melodic indie/alternative sound.
Document 14: Alan McGee: Alan McGee (born 29 September 1960) is a Scottish businessman and music industry executive. He has been a record label owner, musician, manager, and music blogger for "The Guardian". He is best known for co-founding and running the independent Creation Records label from 1983 to 1999, and the Poptones label from 1999 to 2007. He has managed or championed successful acts such as The Jesus and Mary Chain, Primal Scream, My Bloody Valentine, Oasis, and The Libertines. He was also the lead singer and guitarist for the indie pop group Biff Bang Pow!, who were active from 1983 to 1991.
Document 15: Tom Petty: Thomas Earl Petty (born October 20, 1950) is an American musician, singer, songwriter, multi instrumentalist and record producer. He is best known as the lead singer of Tom Petty and the Heartbreakers, but is also known as a member and co-founder of the late 1980s supergroup the Traveling Wilburys (under the pseudonyms of Charlie T. Wilbury Jr. and Muddy Wilbury), and his early band Mudcrutch.
ground_truth: Tom Petty