Question: Steven Siro Vai (; born June 6, 1960) is an American guitarist, composer, singer, songwriter, and producer. He was voted the "10th Greatest Guitarist" by Guitar World magazine, and has sold over 15 million records. A three-time Grammy Award winner and fifteen-time nominee, Vai started his music career in 1978 at the age of 18 as a transcriptionist for Frank Zappa, and joined his band from 1980 to 1983. He embarked on a solo career in 1983 and has released eight solo albums to date.

In 1978, Vai sent both a notated transcription of Frank Zappa's "The Black Page", and a recording of his college band, Morning Thunder, to Zappa. Impressed by this, Zappa responded by putting Vai on salary as a transcriptionist to transcribe his work, which included pieces from the Joe's Garage and Shut Up 'n Play Yer Guitar albums. After leaving Berklee College of Music and moving to California, Vai auditioned for and became a full-time member of Zappa's band, going on his first tour with Zappa in the fall of 1980. Zappa often referred to Vai as his "little Italian virtuoso", and Vai is frequently listed in the liner notes of Zappa's albums as having performed "stunt" or "impossible" guitar parts. Vai was a featured artist on the 1993 release Zappa's Universe, and in 2006, Vai appeared as a special guest on Dweezil Zappa's Zappa Plays Zappa tour; both projects won Vai a Grammy Award. After moving on from Zappa's employ in 1983, Vai bought a house in Sylmar, Los Angeles, where he built his first professional studio. During this period, Vai formed two bands (The Classified and 777) as well as writing and recording a large amount of music that was not originally intended for release. Out of this material, Vai compiled his first studio album Flex-Able. He created his own record label, Akashic Records (later Light Without Heat Records), which he used to take Flex-Able directly to distribution channels. Flex-Able was released in January 1984. Vai began his rise to public acclaim in 1983 when, shortly before the release of Flex-Able, his composition "The Attitude Song" was published in Guitar Player magazine. The song centered itself on a main guitar riff in the time signature 7/16, played over a rhythm section centered in 4/4. Each following section of the song showcased a number of specialized techniques (such as two-handed tapping, whammy bar acrobatics, sweep picking, alternate picking, multi-part harmonies, and odd phrasing) used in angular and exaggerated ways that were unique to the song at the time. Interest from the public eye grew more so when Vai's song "Blue Powder" (a demonstration for the Carvin X100b amplifier) was published in Guitar Player as well, which showed the virtuoso side of Vai's compositional process. Also in 1986, Vai was cast in the blockbuster film Crossroads as the Devil's guitar player "Jack Butler". In the famous "duel scene" between Vai and Ralph Macchio's characters, Vai wrote and performed all guitar parts with the exception of the slide guitar, which was performed by Ry Cooder. In between solo work, Vai replaced Yngwie Malmsteen in June 1984 as the lead guitarist of Alcatrazz, with whom he recorded the album Disturbing the Peace. Vai left shortly after the subsequent tour to join David Lee Roth's band.

Using a quote from the above article, answer the following question: How did his work progress from there?
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Answer: Vai auditioned for and became a full-time member of Zappa's band,

Question: Panic! at the Disco is an American rock band from Las Vegas, Nevada, formed in 2004 and featuring the current lineup of vocalist Brendon Urie, accompanied on tour by guitarist Kenneth Harris, drummer Dan Pawlovich, and bassist Nicole Row. Founded by childhood friends Ryan Ross, Spencer Smith, Brent Wilson and Urie, Panic! at the Disco recorded its first demos while its members were in high school. Shortly after, the band recorded and released its debut studio album, A Fever You Can't Sweat Out (2005).

After the Vices & Virtues tour cycle, Urie, Smith, and Weekes began writing and preparing for a fourth album. During the recording of the album, touring guitarist Ian Crawford, who joined the band in 2009 after the departure of Ryan Ross and Jon Walker, left the band citing his desire to make "real, genuine" music. On July 15, 2013, the album was announced as Too Weird to Live, Too Rare to Die!, with a scheduled release date of October 8, 2013. The first single, "Miss Jackson", was released on July 15, 2013, along with its music video to promote the album. Panic! at the Disco opened for Fall Out Boy on the Save Rock And Roll Arena Tour with Kenneth Harris replacing Crawford. Shortly before the band began its first tour in support of the album, Smith wrote an open letter to fans regarding his abuse of alcohol and prescription medications since the recording of Pretty. Odd. Although Smith joined the band for the first handful of dates, he left the tour to "continue fighting addiction". Urie posted on the band's official website on August 7, 2013, that "It's become evident that Spencer still needs more time to take care of himself. I can't expect him to be fighting addiction one minute and be fully immersed in a national tour the next. With that said, the tour will continue without Spencer while he is away getting the help he needs." Since Spencer's leave of absence, Dan Pawlovich of the band Valencia has filled in on tour. In an interview with Pure Fresh on September 23, 2014, Urie stated that he had already thought about ideas on the fifth studio album; however, he was not sure if it would be a Panic! at the Disco album, or a solo album. Urie has also stated there are no current plans for Smith to return to the band.

Using a quote from the above article, answer the following question: Did he go on tour for Too weird to Live and Too Rare to Die?
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Answer:
Although Smith joined the band for the first handful of dates, he left the tour to "continue fighting addiction".