Question: Who has been a member of more bands, Tom Petty or Bobby Gillespie?
Context: 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. "Jammin' Me" is the first single from "Let Me Up (I've Had Enough)", an 1987 album by Tom Petty and the Heartbreakers.  It is co-written by Bob Dylan, Tom Petty, and Mike Campbell.  The heartland rock tune has been included in Petty's 'best of' albums "Playback" and "". "Stop Draggin' My Heart Around" was the first single from Stevie Nicks' debut solo album, "Bella Donna" (1981).  The track is the album's only song that was neither written nor co-written by Nicks.  Written by Tom Petty and Mike Campbell as a Tom Petty and the Heartbreakers song, Jimmy Iovine, who was also working for Stevie Nicks at the time, arranged for her to sing on it.  Petty sang with Nicks in the chorus and bridge, while his entire band (save Ron Blair, whose bass track was played by Donald "Duck" Dunn instead) played on the song. 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. "Mary Jane's Last Dance" is a song written by Tom Petty and recorded by American rock band Tom Petty and the Heartbreakers.  It was recorded on July 22, 1993, while Petty was recording his "Wildflowers" album, and was produced by Rick Rubin, guitarist Mike Campbell, and Tom Petty.  The sessions would prove to be the last to include drummer Stan Lynch before his eventual departure in 1994.  This song was first released as part of the "Greatest Hits" album in 1993.  It rose to #14 on the "Billboard" Hot 100, becoming his first "Billboard" Top 20 hit of the 1990s, and also topped the "Billboard" Album Rock Tracks chart for two weeks. "Make It Better (Forget About Me)" is a song written by Tom Petty of Tom Petty and the Heartbreakers and David A. Stewart of the Eurythmics.  It was released in June 1985 as the third single from Tom Petty and the Heartbreakers' 1985 album "Southern Accents". 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. 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. 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. Greatest Hits is a compilation album by Tom Petty and the Heartbreakers, released in 1993.  It is Petty's best-selling album to date and was certified 12× platinum by the RIAA on April 28, 2015.  The single "Mary Jane's Last Dance" became one of Petty's most popular songs, reaching #14 on the "Billboard" Hot 100 and #1 on the Billboard Mainstream Rock Tracks chart.  The other new song on the album is a cover of the Thunderclap Newman hit "Something in the Air".  The album contains no songs from 1987's "Let Me Up (I've Had Enough)".  However, three songs from 1989's "Full Moon Fever" were included; despite the album's technical status as a Tom Petty solo album, it contained contributions from several members from the Heartbreakers, thus legitimizing its inclusion on this compilation.  s of September 2011 , "Greatest Hits" had sold 7,464,000 copies in the United States, making it Tom Petty's best-selling album.
Answer: Tom Petty