Question: What instrument does Maddie Rice play in the band on American late-night talk show The Late Show with Stephen Colbert?

Context articles: Cultural impact of The Colbert Report
The Late Late Show with Craig Ferguson
Maddie Rice
Late Show (CBS TV series)
Stay Human (band)
Late Show with David Letterman
The Colbert Report
Brian Stack
The Late Show with Stephen Colbert
The Late Show (Fox TV series)

"The Colbert Report", which premiered in American cable television on October 17, 2005, has had a massive cultural impact since its inception, when the show introduced the word "truthiness".
 Issues in and references to American and world culture are attributed to the character played by Stephen Colbert, who calls his followers the Colbert Nation.
 "The Colbert Report" is a late-night talk and news satire television program hosted by Stephen Colbert that aired on Comedy Central from October 17, 2005 to December 18, 2014 for 1,447 episodes.
 The show focused on a fictional anchorman character named Stephen Colbert, played by his real-life namesake.
 The character, described by Colbert as a "well-intentioned, poorly informed, high-status idiot", is a caricature of televised political pundits. Furthermore, the show satirized conservative personality-driven political talk programs, particularly Fox News' "The O'Reilly Factor".
 "The Colbert Report" is a spin-off of Comedy Central's "The Daily Show", where he acted as a correspondent for the program for several years while developing the character.
The Late Late Show with Craig Ferguson is an American late-night talk show hosted by Scottish American comedian Craig Ferguson.
 It was the third iteration of the "Late Late Show" franchise, airing from 2005 to 2014.
 It followed the "Late Show with David Letterman" in the CBS late-night lineup, airing weekdays in the U.S. at 12:37 a.m. Taped in front of a live studio audience from Monday to Friday at CBS Television City in Los Angeles, California, directly above the Bob Barker Studio (Studio 33), it was produced by David Letterman's production company Worldwide Pants Incorporated and CBS Television Studios.
Maddie Rice is an American guitarist.
 In 2015 she was chosen to play lead guitar in Jon Batiste's Stay Human, the house band for Stephen Colbert, on "The Late Show with Stephen Colbert".
 Her choice was seen as remarkable, as she was then just 22 years old.
The Late Show is an American late-night television talk and variety show on CBS.
 It first aired in August 1993 with host David Letterman, who previously hosted "Late Night with David Letterman" on NBC from 1982 to 1993.
 Letterman's iteration of the program ran until his retirement on May 20, 2015.
 Comedian Stephen Colbert, best known for his roles on Comedy Central programs "The Daily Show" and "The Colbert Report", assumed hosting duties in September.
 The show originates from the Ed Sullivan Theater in the Theater District of Manhattan, New York, and airs live to tape in most U.S. markets at 11:35 p.m. Eastern and Pacific, 10:35 in the Central and Mountain time zones.
Stay Human is a band founded and led by American musician Jon Batiste.
 They are the house band for Stephen Colbert's late-night talk show "The Late Show with Stephen Colbert", which premiered on September 8, 2015.
Late Show with David Letterman is an American late-night talk show hosted by David Letterman on CBS, the first iteration of the "Late Show" franchise.
 The show debuted on August 30, 1993, and was produced by Letterman's production company, Worldwide Pants Incorporated and CBS Television Studios.
 The show's music director and leader of the house band, the CBS Orchestra, was Paul Shaffer.
 The head writer was Matt Roberts and the announcer was Alan Kalter.
 Of the major U.S. late-night programs, "Late Show" ranked second in cumulative average viewers over time and third in number of episodes over time.
 In most U.S. markets the show aired from 11:35 p.m. to 12:37 a.m. Eastern and Pacific Time, and recorded Monday through Wednesdays at 4:30 p.m., and Thursdays at 3:30 p.m. and 6:00 p.m. Eastern Time.
 The second Thursday episode usually aired on Friday of that week.
The Colbert Report ( ) is an American late-night talk and news satire television program hosted by Stephen Colbert that aired four days a week on Comedy Central from October 17, 2005 to December 18, 2014 for 1,447 episodes.
 The show focused on a fictional anchorman character named Stephen Colbert, played by his real-life namesake.
 The character, described by Colbert as a "well-intentioned, poorly informed, high-status idiot", is a caricature of televised political pundits. Furthermore, the show satirized conservative personality-driven political talk programs, particularly Fox News's "The O'Reilly Factor".
 "The Colbert Report" is a spin-off of Comedy Central's "The Daily Show", where he acted as a correspondent for the program for several years while developing the character.
Brian Stack (born August 18, 1964) is an American actor, comedian, and writer best known for his sketch comedy work on all three Conan O'Brien late-night talk shows, previously working on "Late Night with Conan O'Brien" and "The Tonight Show with Conan O'Brien", and on O'Brien's current talk show, "Conan" on TBS.
 Stack left "Conan" in April 2015 to join the writing staff of the CBS series "The Late Show with Stephen Colbert".
The Late Show with Stephen Colbert is an American late-night talk show hosted by Stephen Colbert, which premiered on September 8, 2015.
 Produced by Spartina Productions and CBS Television Studios, "The Late Show" "with Stephen Colbert" is the second iteration of CBS's "Late Show" franchise.
 Stay Human, led by bandleader Jon Batiste, serves as the program's house band, and the announcer is program writer Jen Spyra.
The Late Show was an American late-night talk show and the first series broadcast on the then-new Fox Network.
 Originally hosted by comic actress Joan Rivers, it first aired on October 9, 1986, under the title The Late Show Starring Joan Rivers.
 It is also the first late-night show hosted by Arsenio Hall.