Some context: Charles Michael "Chuck" Schuldiner (May 13, 1967 - December 13, 2001) was an American singer, songwriter, and guitarist. He founded the pioneering band Death in 1983. Schuldiner is often referred to as "The Godfather of death metal", and his obituary in the January 5, 2002 issue of UK's Kerrang! magazine said that "Chuck Schuldiner was one of the most significant figures in the history of metal."
Schuldiner formed Death as Mantas in 1983 when he was just 16 years old. Original members were Schuldiner (guitar), Rick Rozz (guitar) and Kam Lee (drums and vocals). In January 1986, Schuldiner moved to Toronto and temporarily joined the Canadian band Slaughter. However, he quickly returned to continue the formation of Death. Death underwent many lineup changes. With Chris Reifert, Schuldiner eventually released the first Death album, titled Scream Bloody Gore, in 1987. He continued with 1988's Leprosy with the line-up of former Mantas guitarist Rick Rozz and rhythm section Terry Butler on bass and Bill Andrews on drums, and 1990's Spiritual Healing, where guitarist James Murphy had replaced the fired Rozz in 1989. After Spiritual Healing, Schuldiner stopped working with full-time band members, preferring to work with studio and live venue musicians, due to bad relationships with Death's previous rhythm section and guitarists. This earned Schuldiner something of a 'perfectionist' reputation in the metal community. Schuldiner had also fired his manager Eric Greif but settled and re-hired him before the recording of his next, influential release. Death's breakthrough album, Human saw the band evolving to a more technical and progressive style, in which Schuldiner displayed his guitar skills more than ever. He continued in this style (and continued the success of the band) with 1993's Individual Thought Patterns, 1995's Symbolic, and finally The Sound of Perseverance in 1998. Throughout his career, Schuldiner was not afraid to take on controversial lyrical subjects, taking an anti-drug stance on "Living Monstrosity" and writing about abortion in "Altering the Future". He put Death on hold after this to continue Control Denied, which he had been putting together prior to the release of The Sound of Perseverance, and released The Fragile Art of Existence in 1999. Control Denied also had other players from the latest Death album but featured a melodic metal vocalist. Schuldiner also played guitar in the "supergroup" Voodoocult on the album Jesus Killing Machine in 1994 and played a guest solo on Naphobia's 1995 release, Of Hell on the track "As Ancients Evolve" as a favor to the band's bassist at the time who was a friend of Schuldiner's. Schuldiner was also asked to be one of the many guest vocalists on Dave Grohl's 2001 Probot. Grohl, Napalm Death, Ozzy Osbourne, and Anthrax all increased efforts to raise funds for Schuldiner's medical bills with Grohl trying to involve Schuldiner on an album he was working on. In a 1999 interview Schuldiner spoke about why he didn't sing on the album The Fragile Art of Existence "...these vocals are all I ever wanted to do in Death but couldn't. I've had this dream of recording like that for years, and it seems like a dream come true. Tim Aymar is an amazing singer and this is the main difference. I think people will be surprised at the violence and strength of the album. Many people are expecting something like Iron Maiden, but, despite being one of my favorite bands, I didn't want to make an Iron Maiden-like album. I wanted to make an unpredictable album, just like I did in Death, I guess. I don't like to make predictable albums."
did he have it for long?
A: In January 1986, Schuldiner moved to Toronto and temporarily joined the Canadian band Slaughter. However, he quickly returned to continue the formation of Death.

Some context: Rabbitt was born to Irish immigrants Mae (nee Joyce) and Thomas Michael Rabbitt in Brooklyn, New York in 1941, and was raised in the nearby community of East Orange, New Jersey. His father was an oil-refinery refrigeration worker, and a skilled fiddle and accordion player, who often entertained in local New York City dance halls. By age twelve Rabbitt was a proficient guitar player, having been taught by his scoutmaster, Bob Scwickrath. During his childhood Rabbitt became a self-proclaimed "walking encyclopedia of country music".
While he was still relatively unknown, Rabbitt toured with and opened for crossover star Kenny Rogers, and also opened for Dolly Parton on a number of dates during her 1978 tour, but soon Rabbitt would himself break through on other charts. Following the 1978 release of Variations, which included two more No. 1 hits, Rabbitt released his first compilation album, The Best of Eddie Rabbitt. The album produced Rabbitt's first crossover single of his career, "Every Which Way But Loose", which topped Country charts and reached the top 30 on both the Billboard Hot 100 and Adult Contemporary, and was featured in a 1978 Clint Eastwood movie of the same name. The song also broke the record for highest chart debut, entering at No. 18. Rabbitt held this record until it was shared with Garth Brooks at the debut of Brooks' 2005 single "Good Ride Cowboy." The record was broken in 2006 upon the No. 17 chart entrance of Keith Urban's "Once in a Lifetime." Rabbitt's next single, the R&B flavored "Suspicions" from his 1979 album Loveline, was an even greater crossover success, again reaching number one on Country charts and the top 15 on the Billboard Hot 100 and Adult Contemporary. He was given his own television special on NBC, first airing on July 10, 1980, which included appearances by such performers as Emmylou Harris and Jerry Lee Lewis. By this point in his career Rabbitt had been compared to a "young Elvis Presley." Rabbitt's next album Horizon, which reached platinum status, contained the biggest crossover hits of his career including "I Love a Rainy Night" and "Drivin' My Life Away." Rabbitt developed "Rainy Night" from a song fragment that he penned during a 1960s thunderstorm. "Driving" recalled Rabbitt's tenure as a truck driver, and was inspired by Bob Dylan's song "Subterranean Homesick Blues" from Dylan's 1965 album Bringing It All Back Home. His popularity was so strong at this point that he was offered his own variety television show, which he went on to respectfully decline stating "It's not worth the gamble." The release of his 1981 Step by Step album continued Rabbitt's crossover success as all three singles reached the top 10 on both Country and Adult Contemporary charts. The title track became Rabbitt's third straight single to reach the top 5 on Country, Adult Contemporary and the Billboard Hot 100 charts. The album ultimately reached gold status, Rabbitt's final album to do so. He teamed up with another country pop crossover star, Crystal Gayle, to record "You and I", which was included in his 1982 album Radio Romance. The duet reached No. 1 on the Billboard Country chart and eventually became a large pop smash, peaking at No. 7 and No. 2 respectively on the Billboard Hot 100 and Adult Contemporary chart. The song's popularity reached the point where it was used as a love theme for a couple on the soap opera All My Children. The song "You Put the Beat in My Heart" from Rabbitt's second Greatest Hits compilation in 1983 was his final crossover hit, reaching No. 15 on the Adult Contemporary chart.
what kind of music was he doing before the crossover
A:
Country