Question: Did Jimi Jamison or Andrew Montgomery's band begin performing earlier?

full_context: Document 1: Jim Morrison: James Douglas Morrison (December 8, 1943 – July 3, 1971) was an American singer, songwriter, and poet, best remembered as the lead singer of the Doors. Due to his poetic lyrics, distinctive voice, wild personality, performances, and the dramatic circumstances surrounding his life and early death, Morrison is regarded by both music critics and fans as one of the most iconic and influential frontmen in rock music history.
Document 2: Moon Guitars: Moon Guitars was established in 1979 by Jimmy Moon in a small workshop on the Island of Arran in Scotland. His reputation grew quickly and he was soon making (mostly electric guitars) and repairing instruments for many of Scotland’s finest musicians. A move to Glasgow was made in 1985 and for the following ten years, the company produced mostly custom electric instruments for many of Scotland’s well-known bands including Big Country, Texas, Simple Minds, Wet Wet Wet and Del Amitri. The next five years saw a change in the industry, and recognising this shift, Jimmy returned to his roots and began producing acoustic guitars and the entire mandolin family. Acoustic guitars range from Standard Series through to Master Grade instruments built with exotic timbers. The range also includes signature models for Bryan Adams and Scottish folk singer Dougie MacLean. Some current users of Moon acoustic instruments include: Adele, Ally McErlaine (Texas & Red Sky July), Bryan Adams, Dougie MacLean, Guy Berryman (Coldplay), Paolo Nutini, Trevor Rabin, Steve Earle, Peter Rowan, Roy Harper and the Scissor Sisters.
Document 3: Scottish music (1980–1989): During the 1980s, Scottish music featured post-punk bands exemplified by Simple Minds and Josef K, and bands like Runrig that remained closer to the Scottish dance music tradition. Folk rock or Celtic rock bands launched in the 1980s included The Waterboys and The Proclaimers. Among the folk singers of the time were Dick Gaughan and Bill Drummond, and Ewan MacColl who died in 1989.
Document 4: Andrew Montgomery: Andrew Montgomery is a Scottish singer who is best known as a member of late '90s Aberdeen indie rock band Geneva.
Document 5: Andrew Scott (drummer): Andrew Walter Gibson Scott (born November 15, 1967) is a Canadian musician born in Ottawa, Ontario and currently living in Toronto. His first bands include No Damn Fears, Oreo Reversed and Blackpool from Halifax, Nova Scotia. Currently, he is a drummer with the Toronto-based band Sloan. He also plays guitar with the band, usually on songs he has written. Three of his songs, "500 Up", "People of the Sky", and "I've Gotta Try" have been released by Sloan as singles. He is married to Fiona Highet and is father of Stirling Scott and Alistair Scott.
Document 6: Scott Montgomery (poker player): Scott Montgomery (born October 16, 1981) is a poker player from Perth, Ontario, Canada who won his first bracelet at the 2010 World Series of Poker in the $1,000 No-Limit Hold’em Event #36 and was one of the final table players in the 2008 World Series of Poker Main Event. He finished in fifth place earning $3,088,012, which was his fourth cash in the 2008 WSOP. He was eliminated by Peter Eastgate after going all in with Ad  3d . Eastgate had pocket sixes. Montgomery got an ace on the flop and another on the turn. Another player, Dennis Phillips, had folded a six, meaning Eastgate could only hit the 6d to win the hand. Eastgate hit his card, giving him a full house and eliminating Montgomery.
Document 7: Jimmy Wayne: Jimmy Wayne Barber (born October 23, 1972) is an American country music singer and songwriter. He released his self-titled debut album in 2003 on the DreamWorks Records label. Four singles were released from it, including "Stay Gone" and "I Love You This Much", which both reached Top Ten on the "Billboard" country charts. A second album, "Do You Believe Me Now", was released in August 2008 via Big Machine Records subsidiary Valory Music Group, and its title track became his first Number One hit in late 2008. "Sara Smile" followed in 2009.
Document 8: Jimi Jamison: Jimmy Wayne "Jimi" Jamison (August 23, 1951 – September 1, 2014) was an American musician, singer, and songwriter. He had previously been the frontman of the platinum-selling rock band Survivor between 1984–89, 2000–06 and from 2011 until his death. Jamison is also known for writing and performing "I'm Always Here", the theme song for the TV series "Baywatch".
Document 9: James Montgomery (singer): James Montgomery (born May 12, 1949) is an American blues musician, best known as the lead singer, blues harp player, frontman, and bandleader of The James Montgomery Blues Band (a.k.a. The James Montgomery Band). Montgomery collaborates with many star performers and recording artists. He is also the past President of The New England Blues Society.
Document 10: The Associates (band): The Associates were a Scottish rock act, formed in Dundee in 1979 by singer Billy Mackenzie and guitarist Alan Rankine. The group first gained recognition after releasing an unauthorized cover of David Bowie's "Boys Keep Swinging" in 1979, which landed them a contract with Fiction Records. They followed with their debut album "The Affectionate Punch" in 1980 and the singles collection "Fourth Drawer Down" in 1981, both to critical praise.
Document 11: Vital Signs (Survivor album): Vital Signs is the fifth studio album by American rock band Survivor and their first with vocalist Jimi Jamison. The album was their second most successful in the U.S., reaching #16 on the Billboard Album charts and being certified platinum by the RIAA. This album includes the singles "I Can't Hold Back", "High on You", "The Search Is Over" and "First Night."
Document 12: Burning Heart (song): "Burning Heart" is a song by Survivor. It was sung by Jimi Jamison and appeared in the 1985 film "Rocky IV" and on its soundtrack album. The single peaked at number 2 on the "Billboard" Hot 100 for two weeks in February 1986, behind "That's What Friends Are For" by Dionne and Friends.
Document 13: Billy Mackenzie: William MacArthur "Billy" MacKenzie (27 March 1957 – 22 January 1997) was a Scottish singer, with a distinctive high tenor voice; he was best known as a member of The Associates.
Document 14: Jim Sullivan (singer-songwriter): James Anthony Sullivan (August 13, 1940 – disappeared March 6, 1975) was an American singer-songwriter and guitarist who released two albums before he disappeared without a trace in New Mexico.
Document 15: Jimmy Somerville: James William Somerville (born 22 June 1961) is a Scottish pop singer and songwriter. He sang in the 1980s with the pop groups Bronski Beat and The Communards, and has also had a solo career. He is known in particular for his falsetto singing voice.
ground_truth: Jimmy Wayne "Jimi" Jamison