Question: When did this American Southern rock band with multiple guitar players and a heavy metal drummer reach it's peak?

full_context: Document 1: Tomas Haake: Tomas Haake (born 13 July 1971) is a Swedish drummer and main songwriter of the extreme metal band Meshuggah. He is known for his polyrhythms and technical ability. In 2012, Haake was named the 5th best Modern Metal drummer by MetalSucks.net. In the July 2008 edition of "Modern Drummer" magazine, Haake was named the number one drummer in the "Metal" category, as decided upon in the magazine's Readers' Poll.
Document 2: Lynyrd Skynyrd: Lynyrd Skynyrd (pronounced ) is an American rock band best known for popularizing the Southern rock genre during the 1970s. Originally formed in 1964 as "My Backyard" in Jacksonville, Florida, the band was also known by names such as "The Noble Five" and "One Percent", before finally deciding on "Lynyrd Skynyrd" in 1969. The band gained worldwide recognition for its live performances and signature songs "Sweet Home Alabama" and "Free Bird". At the peak of their success, two band members and a backup singer died in an airplane crash in 1977, putting an abrupt end to the band's most popular incarnation. The band has sold 28 million records in the United States.
Document 3: 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 4: Blackfoot (band): Blackfoot is an American Southern rock band from Jacksonville, Florida formed during 1970. Though they primarily play with a Southern rock style, they are also known as a hard rock act. The band's classic lineup consisted of guitarist and vocalist Rickey Medlocke, guitarist Charlie Hargrett, bassist Greg T. Walker, and drummer Jakson Spires.
Document 5: Andrus, Blackwood and Company: Andrus, Blackwood & Company was a racially integrated Contemporary Christian Music group, releasing six albums between 1977 and 1984. The group was composed of two former members of The Imperials, Sherman Andrus and Terry Blackwood as co-lead vocalists. Rounding out the group's first touring band in 1977 were Rocky Laughlin on bass, Tim Marsh on drums, Bob Villareal on guitar and backing vocals, and Karen Voegtlin on keyboards and backing vocals. Other alternating band members between 1978 and 1986 included Billy Blackwood (cousin of Terry Blackwood) on drums, John Mays on bass, Mark Hughes on bass (later with Dobie Gray and owner the world's largest used music store, Mr Mark's Music in Nashville (1980–90, 2000-2016-current), Jeff Chambers on guitars, Randy Dennis on keyboards, David Ennis (later with country group Restless Heart) on keyboards, Gerritt Wilson on Synths, David Hassell on keyboards and vocals, Mark Burchfield on bass. David Hassell also worked as office manager and tour manager for the group. The group's final performance came in June 1986 at Six Flags theme park in Chicago, IL.
Document 6: Lee Kerslake: Lee Kerslake (born 16 April 1947 in Winton, Bournemouth, Dorset, England) is an English musician, best known as the longtime drummer and backing vocalist for the rock band Uriah Heep and for his work with Ozzy Osbourne in the early 1980s.
Document 7: Grand Funk Railroad: Grand Funk Railroad, sometimes shortened as Grand Funk, is an American rock band popular during the 1970s, when they toured extensively and played to packed arenas worldwide. David Fricke of "Rolling Stone" magazine once said, "You cannot talk about rock in the 1970s without talking about Grand Funk Railroad!" Known for their crowd-pleasing arena rock style, the band was well-regarded by audiences despite a relative lack of critical acclaim. The band's name is a play on words of the Grand Trunk Western Railroad, a line that ran through the band's home town of Flint, Michigan.
Document 8: Count's 77: Count's 77 is a hard rock band from Las Vegas, Nevada. It was formed by Danny "The Count" Koker, titular star of "Counting Cars", the History Channel spinoff of "Pawn Stars". The band focuses on the rock genre of the 1970s and has been playing and performing since well before Koker's rise in the public eye. "The Count," who heads the band with lead vocals, is joined by John Zito (guitar), Stoney Curtis (guitar), Barry Barnes (bass) and Paul Disibio (drums) and the recently added Tommy Paris (keyboard). They are currently signed to Shrapnel Records. The number "77" in the band's name is a reference to the 1970s, the decade whose music is an inspiration to the band.
Document 9: Tommy Aldridge: Tommy Aldridge (born August 15, 1950) is an American heavy metal and hard rock drummer. Aldridge is noted for his work with numerous bands and artists since the 1970s, such as Black Oak Arkansas, Pat Travers Band, Ozzy Osbourne, Gary Moore, Whitesnake, Ted Nugent, Thin Lizzy, Vinnie Moore & Yngwie Malmsteen.
Document 10: Tommy Mars: Tommy Mars (born Thomas Mariano on October 26, 1951) is an American keyboard player known for his work with Frank Zappa.
Document 11: Tommy Clufetos: Tommy Clufetos (born December 30, 1979) is an American session drummer most noted for his work with Black Sabbath during their Black Sabbath Reunion Tour, which highlighted their new album "13". He also toured with them on their final tour. He's also the drummer for Black Sabbath vocalist Ozzy Osbourne.
Document 12: Greg Voelker Rack System: The Greg Voelker Rack System is a unique drum rack used by former Megadeth drummer Nick Menza, David Beal drummer for Joe Cocker, Julian Lennon, Honeymoon Suite, Rod Morgenstein drummer for Dixie Dregs and Winger and was voted by Modern Drummer Magazine's "Most Popular Progressive Rock Drummer", Michael Foster, drummer for FireHouse, and Whitesnake drummer Tommy Aldridge. It was designed for its lack of stands, which serves for a flashy live look and prevents a drummer/band from knocking over cymbal/drum stands. Designed by Greg Voelker, the rack was made out of Stainless Steel and was attached to a built in riser which allows the bass drums to float. Thereby, giving the drummer more mounting flexibility well as avoiding the clutter of stands on stage. The racks mentioned were custom made for each drummer. A "Standard" rack by Greg Voelker was distributed through Premier drums from the late 1980s to the early to mid-1990s.
Document 13: List of Ozzy Osbourne band members: After being fired from his band Black Sabbath, English heavy metal vocalist Ozzy Osbourne began his solo career in 1979. His initial band comprised himself, guitarist Randy Rhoads (formerly of Quiet Riot), bassist Bob Daisley (formerly of Rainbow) and drummer Lee Kerslake (formerly of Uriah Heep). Keyboardist Don Airey was brought in temporarily to record on Osbourne's first album, "Blizzard of Ozz", in 1980. After the recording of "Diary of a Madman", released in 1981, Daisley and Kerslake were fired from the band, replaced by Rudy Sarzo and Tommy Aldridge respectively.
Document 14: Bark at the Moon: Bark at the Moon is the third studio album by British heavy metal vocalist Ozzy Osbourne, originally released on 15 November 1983. The album features former Mickey Ratt and Rough Cutt guitarist Jake E. Lee, who replaced guitarist Randy Rhoads who had been killed a year earlier in a plane crash. The album peaked at number 19 on the "Billboard" album chart and within several weeks of release was certified Gold for over 500,000 sales in the United States. To date, it has sold over 3,000,000 copies in the US. In the UK, it was the third of four Osbourne albums to attain Silver certification (60,000 units sold) by the British Phonographic Industry, achieving this in January 1984. The album was remastered on CD in 1995 and again (with a different mix) in 2002. This is the first album to feature guitarist Jake E. Lee and the only studio album to feature drummer Tommy Aldridge.
Document 15: Black Oak Arkansas: Black Oak Arkansas is an American Southern rock band named after the band's hometown of Black Oak, Arkansas. The band reached the height of its fame in the 1970s with ten charting albums released in that decade. Their style is punctuated by multiple guitar players and the raspy voice and on-stage antics of vocalist Jim "Dandy" Mangrum.
ground_truth: 1970s