Question: Which musician, Edwyn Collins or Jimmie Ross, played the bass guitar?

full_context: Document 1: Orange Juice (band): Orange Juice was a Scottish post-punk band founded in the Glasgow suburb of Bearsden as the Nu-Sonics in 1976. Edwyn Collins formed the Nu-Sonics (named after a cheap brand of guitar) with his school-mate Alan Duncan and was subsequently joined by James Kirk and Steven Daly, who left a band called The Machetes. The band became Orange Juice in 1979. They are best known for the hit "Rip It Up", which reached number 8 on the UK Singles Chart in February 1983, the band's only UK Top 40 hit.
Document 2: Edwyn Collins: Edwyn Stephen Collins (born 23 August 1959) is a Scottish musician, producer and record label owner from Edinburgh, Scotland. Collins was the lead singer for the 1980s post-punk band Orange Juice, which he co-founded. Following the group's split in 1985, Collins started a solo career. His 1994 single "A Girl Like You" was a worldwide hit.
Document 3: Jim Ross: James William Ross (born January 3, 1952) is an American professional wrestling commentator and talent relations executive who is best known as the longtime lead play-by-play commentator for World Wrestling Entertainment (WWE). He is a former referee, restaurateur and barbecue sauce and beef jerky developer.
Document 4: Full Circle (Jimmie Ross album): Full Circle is the debut album of Pittsburgh rock/pop musician Jimmie Ross, best known as a member of the Jaggerz. The album, released in 2010, contains the best of his songs from the Jaggerz.
Document 5: Understated (Edwyn Collins album): Understated is the eighth solo album by the Scottish singer/songwriter Edwyn Collins, released 25 March 2013 on AED Records.
Document 6: A Casual Introduction 1981/2001: A Casual Introduction 1981/2001 is an album by Scottish musician Edwyn Collins. It is a collection of both his solo work and also work of Orange Juice, the band he fronted from 1979 to the mid-80s.
Document 7: Jimmy Gestapo: James Drescher (born December 10, 1960), better known as Jimmy G or Jimmy Gestapo and also known as Jimmy Spliff, is the lead singer for New York based hardcore punk band Murphy's Law.
Document 8: Gorgeous George (album): Gorgeous George is the third solo studio album by Scottish musician Edwyn Collins. The album was recorded at New River in London, with Collins acting as the producer.
Document 9: Charlie Ross (singer): Charlie Ross, sometimes billed as Charles Ross III, was an American singer who had some chart success as part of a group, and as a pop and country singer. He was born in Greenville, Mississippi. He was employed as a disk jockey at WDDT, before joining the group Phantom, which eventually became Eternity's Children. While still a member of Eternity's Children, he released his first solo record. In the mid-1970s he was working as a disk jockey at KFJZ. During this time he released two singles for Big Tree Records which charted nationally in the pop field. "Thanks for the Smiles" reached #61 in 1975, and "Without Your Love (Mr. Jordan)" just missed the top-40 at #42 in 1976. The single was re-imagined for a different audience, and became a Billboard "Top Country Pick" and "Without Your Love" charted higher in the country genre, at #13, in 1976. He had more charting country singles for Town House Records in 1982, where his "The High Cost of Loving" appeared at #33, and "Are We In Love (Or Am I)" was #45. Subsequently he continued his radio hosting duties, and started his own companies in communications and music production.
Document 10: Jim &quot;Dandy&quot; Mangrum: James Mangrum (born March 30, 1948), better known as Jim "Dandy" Mangrum, is the lead singer and frontman for the American Southern rock band Black Oak Arkansas. He is noted for his raspy voice, long hair, and wild, sexually-explicit stage antics which sometimes included miming sex with a washboard which he often uses to accompany his singing. His stage persona is credited as having been a major influence on Van Halen vocalist David Lee Roth.
Document 11: Jimmy Crespo: James Crespo, Jr. (born July 5, 1954 in Brooklyn, New York) is an American guitarist. He was the lead guitarist for Aerosmith from 1979 until 1984. He co-wrote "Rock in a Hard Place" with Steven Tyler, and has performed or recorded with Rod Stewart, Billy Squier, Meat Loaf, Stevie Nicks, Robert Fleischman, Rough Cutt, Renegade, Flame and others.
Document 12: I'm Not Following You: I'm Not Following You is an album by Scottish musician Edwyn Collins released in 1997.
Document 13: Home Again (Edwyn Collins album): Home Again is the sixth solo album by former Orange Juice singer Edwyn Collins, released 17 September 2007 on Heavenly Records.
Document 14: Hope and Despair: Hope and Despair is the debut solo album by Scottish musician Edwyn Collins.
Document 15: Jimmie Ross: Jimmie Ross is an American rock guitarist and vocalist who is best known for being a member of Pittsburgh band the Jaggerz, known for their 1970 hit "The Rapper". During the band's initial existence of 1965-1976, the bassist shared the duties of lead vocalist with guitarist Donnie Iris. By the time the Jaggerz regrouped in 1989, Iris was well into his solo career, and Ross became the sole lead vocalist and remained bassist. He continues to hold both positions today.
ground_truth: Jimmie Ross