input: The lack of a strong lead vocalist had always been considered PFM's biggest liability so, for this reason, they enrolled Bernardo Lanzetti, who was previously with the group Acqua Fragile. While a college student, Lanzetti had lived in Austin, Texas for a few years. But most importantly he had a powerful and distinctive voice and could speak fluent English. The first release by the six-piece band was Chocolate Kings in 1975. Featuring a harder rock sound, it had modest success at home but was their least popular album in Italy so far. The same album was released with different cover art by Manticore in the UK and by Asylum Records in the US. The controversial US/UK cover showed a chocolate bar in a partially peeled Stars and Stripes wrapper on the front, along with the crumpled and discarded wrapper on the back. PFM appeared on the BBC television show The Old Grey Whistle Test in 1976 performing the title track to the album. The album reached the UK top 20 but was less successful internationally. Mauro Pagani left the group following Chocolate Kings to pursue a solo career. Lanzetti also appeared on Jet Lag (1977), an album highly influenced by the Jazz-fusion movement, which was recorded in Los Angeles. This was their last album with English lyrics and the last album released in the U.S., also on Asylum. Violinist Gregory Bloch, previously with the group It's a Beautiful Day, replaced Mauro Pagani and helped the band acquire notoriety in the US before leaving to join the Saturday Night Live Band in 1979. For Passpartu (1978) PFM added two new percussion players and shifted stylistic direction once again. The album contains seven songs in Italian and one instrumental, characterized by an international pop music style; an early example of what today is known as 'Worldbeat'. The album contains mostly acoustic guitar and draws from Italian folk and Latin music as well as Jazz-Pop styles, somewhat like Steely Dan. This was the last album to feature Lanzetti, who then left to pursue a solo career.

Answer this question "What happened between 1975-1978?"
output: The first release by the six-piece band was Chocolate Kings in 1975.

input: On January 20, 2009, Sparks performed "Faith" at the Commander-in-Chief's Inaugural Ball hosted by President Barack Obama during the First inauguration of Barack Obama. Her second studio album, Battlefield was released in the United States on July 21, 2009. The album's title track was released as the lead single on May 25, 2009, and reached number ten on the Billboard Hot 100. The song peaked in the top five in Australia, Canada, and New Zealand. In the United States, Battlefield debuted at number seven on the Billboard 200, peaking higher than her debut album's position of number ten. However, the album was notably unsuccessful compared to her debut, only selling 177,000 copies in the U.S and having failed to earn any chart certificates. In support of the album, Sparks opened for The Jonas Brothers on the North America leg of the Jonas Brothers World Tour 2009, starting on June 20, 2009. She also opened for Britney Spears on the second leg of her Circus Tour in North America, beginning on August 24, 2009. Sparks served as a replacement for Ciara. She opened with Kristinia DeBarge, Girlicious, and One Call. "S.O.S. (Let the Music Play)", was released as the second single from Battlefield on September 15, 2009. The song topped the U.S Hot Dance Club Songs chart, becoming Sparks's first number one on the chart and peaked in the top fifteen in the United Kingdom. During this time, she recorded the duet, "Art of Love", with Australian artist Guy Sebastian for his fifth studio album, Like It Like That. The song reached the top ten in Australia and New Zealand and was certified platinum by the Australian Recording Industry Association. The third single from Battlefield, "Don't Let It Go to Your Head", was released in the United Kingdom on January 8, 2010. In May 2010, Sparks embarked on her first headlining tour in the United States, the Battlefield Tour. It began on May 1, 2010, and ended on July 18, 2010, stopping in over 35 major cities in the United States. In support of the DVD/Blu-ray re-release of the Disney animated film, Beauty and the Beast, Sparks recorded a cover of the film's title track for the soundtrack. A music video for the song was released on October 18, 2010.

Answer this question "Did she tour after releasing this album?"
output: In May 2010, Sparks embarked on her first headlining tour in the United States,

input: Stone Gossard and Jeff Ament were members of pioneering grunge band Green River during the mid-1980s. Green River toured and recorded to moderate success but disbanded in 1987 due to a stylistic division between the pair and bandmates Mark Arm and Steve Turner. In late 1987, Gossard and Ament began playing with Malfunkshun vocalist Andrew Wood, eventually organizing the band Mother Love Bone. In 1988 and 1989, the band recorded and toured to increasing interest and found the support of the PolyGram record label, which signed the band in early 1989. Mother Love Bone's debut album, Apple, was released in July 1990, four months after Wood died of a heroin overdose. Ament and Gossard were devastated by the death of Wood and the resulting demise of Mother Love Bone. Gossard spent his time afterwards writing material that was harder-edged than what he had been doing previously. After a few months, Gossard started practicing with fellow Seattle guitarist Mike McCready, whose band, Shadow, had broken up; McCready in turn encouraged Gossard to reconnect with Ament. After practicing for a while, the trio sent out a five-song demo tape in order to find a singer and a drummer. They gave former Red Hot Chili Peppers drummer Jack Irons the demo to see if he would be interested in joining the band and to distribute the demo to anyone he felt might fit the lead vocal position. Irons passed on the invitation but gave the demo to his basketball friend, San Diego, California singer Eddie Vedder. Vedder was the lead vocalist for a San Diego band, Bad Radio, and worked part-time at a gas station. He listened to the tape shortly before going surfing, where lyrics came to him. He then recorded the vocals to three of the songs ("Alive", "Once", and "Footsteps") in what he later described as a "mini-opera" entitled Momma-Son. Vedder sent the tape with his vocals back to the three Seattle musicians, who were impressed enough to fly Vedder up to Seattle for an audition. Within a week, Vedder had joined the band. With the addition of Dave Krusen on drums, the band took the name Mookie Blaylock, in reference to the then-active basketball player Mookie Blaylock. The band played its first official show at the Off Ramp Cafe in Seattle on October 22, 1990. They opened for Alice in Chains at the Moore Theatre in Seattle on December 22, 1990, and served as the opening act for the band's Facelift tour in 1991. Mookie Blaylock soon signed to Epic Records and renamed themselves Pearl Jam. In an early promotional interview, Vedder said that the name "Pearl Jam" was a reference to his great-grandmother Pearl, who was married to a Native American and had a special recipe for peyote-laced jam. In a 2006 Rolling Stone cover story however, Vedder admitted that this story was "total bullshit", even though he indeed had a great-grandma named Pearl. Ament and McCready explained that Ament came up with "pearl", and that the band later settled on "Pearl Jam" after attending a concert by Neil Young, in which he extended his songs as improvisations of 15-20 minutes in length.

Answer this question "When did they form their band?"
output:
In 1988 and 1989, the band recorded and toured to increasing interest and found the support of the PolyGram record label, which signed the band in early 1989.