Question: What instrument did Shannon Leto play in his band Thirty Seconds to Mars?

Context articles: Thirty Seconds to Mars
Shannon Leto
Kings and Queens (Thirty Seconds to Mars song)
Walk on Water (Thirty Seconds to Mars song)
Artifact (film)
Conquistador (Thirty Seconds to Mars song)
List of songs recorded by Thirty Seconds to Mars
Thirty Seconds to Mars discography
30 Seconds to Mars (album)
Capricorn (A Brand New Name)

Thirty Seconds to Mars (commonly stylized as 30 Seconds to Mars) is an American rock band from Los Angeles, California, formed in 1998.
 The band consists of Jared Leto (lead vocals, guitar, bass, keyboards), Shannon Leto (drums, percussion) and Tomo Miličević (lead guitar, bass, violin, keyboards, other instruments).
Shannon Leto ( ; born March 9, 1970) is an American musician and songwriter best known as the drummer of rock band Thirty Seconds to Mars.
 He co-founded the group in 1998 in Los Angeles, California, with his younger brother Jared.
 Their debut album, "30 Seconds to Mars" (2002), was released to positive reviews but only to limited success.
 The band achieved worldwide fame with the release of their second album "A Beautiful Lie" (2005).
 Their following releases, "This Is War" (2009) and "Love, Lust, Faith and Dreams" (2013), received further critical and commercial success.
 As of September 2014, the band has sold over 15 million albums worldwide.
"Kings and Queens" is a song by American rock band Thirty Seconds to Mars, featured on their third studio album "This Is War" (2009).
 Written by lead vocalist Jared Leto across the United States and South Africa, the track was produced by Flood, Steve Lillywhite and Thirty Seconds to Mars.
 According to Leto, the lyrics of "Kings and Queens" explore the triumphant feeling of human possibilities.
 The melody of the song contains several qualities similar to that of 1980s adult contemporary musical works and is imbued with elements of progressive rock.
 The song was released as the lead single from "This Is War" on October 13, 2009.
"Walk on Water" is a song recorded by American rock band Thirty Seconds to Mars, featured on their upcoming fifth studio album.
 It was written by lead vocalist Jared Leto and drummer Shannon Leto, and recorded at the International Centre for the Advancement of the Arts and Sciences of Sound in Los Angeles, California.
 "Walk on Water" was released on August 22, 2017 through Interscope Records, as the lead single from the album.
Artifact is a 2012 American documentary film.
 It was directed by Jared Leto under the pseudonym of Bartholomew Cubbins, and produced by Leto and Emma Ludbrook.
 "Artifact" chronicles the modern music business as it charts the legal dispute between Leto's rock band Thirty Seconds to Mars and record label EMI, which filed a $30 million breach of contract lawsuit against them in 2008, after the band tried to exit its contract over a royalties dispute.
 Thirty Seconds to Mars is shown working with producer Flood to create the 2009 album "This Is War", meeting with lawyers between recording sessions.
"Conquistador" is a song by American rock band Thirty Seconds to Mars, featured on their fourth studio album "Love, Lust, Faith and Dreams" (2013).
 Written by lead vocalist Jared Leto, who also produced the song with Steve Lillywhite, "Conquistador" features combative lyrics and call-and-response verses.
 Described as the "wild child" of the album, it is an alternative rock song with influences and elements from electronica.
 Thirty Seconds to Mars premiered the song on Vevo on May 2, 2013, two weeks before the album's release.
American rock band Thirty Seconds to Mars has recorded material for four studio albums.
 The band was formed in Los Angeles, California, in 1998 by brothers Jared and Shannon Leto.
 The duo later expanded to a four-piece when they added guitarist Solon Bixler and bassist Matt Wachter to the line-up.
 After signing a contract with record label Immortal Records in 1998, the band began to work with producers Bob Ezrin and Brian Virtue on their debut album, "30 Seconds to Mars", which was released in August 2002.
 The album produced two singles, "Capricorn (A Brand New Name)" and "Edge of the Earth".
 In early 2003, Bixler left the band due to issues primarily related to touring and was replaced by Tomo Miličević.
 Thirty Seconds to Mars released their second studio album, "A Beautiful Lie", in August 2005.
 The record, produced by Josh Abraham, was preceded by the single "Attack" and spawned two Kerrang!
 Award-winning singles, "The Kill" and "From Yesterday".
 The album's title track, "A Beautiful Lie", was released as the fourth single in selected territories. "
Hunter", a song originally performed by Björk, was covered by the band and added to the track listing of the album.
 In March 2007, Wachter left the group to spend more time with his family and was replaced by Tim Kelleher, performing live only.
American rock band Thirty Seconds to Mars has released four studio albums, three extended plays, fourteen singles, four promotional singles, one video album and thirteen music videos.
 The band was formed in Los Angeles, California, in 1998 by brothers Jared Leto and Shannon Leto, with Tomo Miličević joining the band later.
 The band's debut album, "30 Seconds to Mars", was released through Immortal and Virgin Records in August 2002 and peaked at number 107 on the US "Billboard" 200 and number one on the US Top Heatseekers, selling more than two million copies worldwide as of March 2011.
 The album produced two singles, "Capricorn (A Brand New Name)" and "Edge of the Earth".
30 Seconds to Mars is the debut studio album by American rock band Thirty Seconds to Mars.
 It was first released on August 27, 2002, by Immortal Records and distributed by Virgin Records.
 The album was produced by Bob Ezrin, Brian Virtue, and Thirty Seconds to Mars, and was recorded in rural Wyoming during 2001 and early 2002.
 It had been in the works for a couple of years, with lead vocalist Jared Leto writing the majority of the songs.
"Capricorn (A Brand New Name)" is the debut song by American rock band Thirty Seconds to Mars.
 The song was released by Immortal Records on July 23, 2002, as the lead single from the band's self-titled debut album.
 The song was written by Jared Leto and was produced by Bob Ezrin, Brian Virtue and 30 Seconds to Mars.
 According to Jared Leto, the song is about a desire for renewal.
 "Capricorn (A Brand New Name)" first appearance was on the compilation "Rock Tune Up #249" released by The Album Network on April 5, 2002.