Question: On the album Friar Tut, Tut Taylor is joined by Sam Bush, who plays what instrument?
Context: Charles Samuel "Sam" Bush (born April 13, 1952) is an American bluegrass mandolin player considered an originator of the Newgrass style. Shacktown Road is an album by Americana and folk musicians Norman Blake, Nancy Blake and Tut Taylor, released in 2007.  It was the first time Blake and Taylor recorded together since they were members of John Hartford's Aero-Plain band in the 1970s. Norman Blake/Tut Taylor/Sam Bush/Butch Robins/Vassar Clements/David Holland/Jethro Burns Tales From The Acoustic Planet is an album by American banjoist Béla Fleck.  It is a jazzy album with roots in bluegrass, where Fleck is joined by bluegrass stars (Sam Bush, Tony Rice, Jerry Douglas), as well as his jazz friends (Chick Corea, Branford Marsalis, Paul McCandless) and Flecktones members (Victor Wooten, Future Man).  This is also his first solo album since 1988's "Places". Friar Tut is an album by Americana and Bluegrass dobro player Tut Taylor, released in 1972.  Taylor is joined by Norman Blake, Sam Bush and David Taylor.  Taylor's son David was 16 years old at the time of this recording. Gruhn Guitars is a musical instrument shop and place of interest located in Nashville, Tennessee.  Vintage instruments comprise a large portion of its inventory, but it also features new instruments from factories and independent luthiers.  It is a mecca for rock stars and well-heeled collectors.  The business opened on January 2, 1970.  It won a lot of new business and national attention after Visa featured it in 1992 in a TV commercial.  George Gruhn is the world’s leading expert on vintage American guitars and related instruments, according to Walter Carter, historian and archivist for the Gibson Guitar Company.  The shop was originally called GTR, which stood for George Gruhn, Tut Taylor and Randy Wood; a story has circulated that country music star Hank Williams, Jr. encouraged Gruhn to go into business.  The store is located right by the stage door of the Ryman Auditorium, the home of the Grand Ole Opry.  On December 31, 2006, Garrison Keillor, for his New Year's Show at Ryman Auditorium for PBS' "Great Performances" visited Gruhn Guitars with Vince Gill before the start of the show.  Garrison Keiller's New Year's Eve Special Gill told a story about buying some of his guitars at Gruhn's.  "Gruhn's customer's have included the likes of Duane Allman, Mark Knopfler, Conan O'Brien, Robert Plant and Eric Clapton. Paddy Bush (born 9 December 1952) is an English musician, instrument maker, music critic, producer and artist.  He is also the older brother of singer-songwriter, musician, and record producer Kate Bush and his best-known works are his collaborations with her on all of her studio albums up to the 2005 release "Aerial".  Bush often plays standard instruments such as the guitar, mandolin, and harmonica, along with more exotic and unusual instruments, such as the balalaika, sitar, koto, and digeridoo.  Bush is the sole European musician who has mastered playing - and making of - the Marovany, a traditional Malagasy instrument related to the Valiha.  He undertook a number of extensive trips to Madagascar for filming and radio recording purposes.  On one of these, Bush presented the widely screened television documentary "Like A God When He Plays" which also features popular Malagasy musician Justin Vali.  Bush was an original member of the KT Bush Band.  In 1993, Bush collaborated with Colin Lloyd-Tucker to form the band Bushtucker. Steam Powered Aereo-Takes is a collection of outtakes, demos and jam-sessions from John Hartford's groundbreaking 1971 album "Aereo-Plain", released in 2002.  The music is a blend of traditional bluegrass musicianship, and the hippie spirit of the '70s.  The other members of the Aereo-Plain Band were Norman Blake, Vassar Clements, Tut Taylor, and Randy Scruggs. Jeff Black is an American singer-songwriter originally from Kansas City, Missouri and now based in Nashville, Tennessee.  His writings have been described in the "Allmusic" as "impressionistic songs that are smart without forgetting the emotional undercurrent."  His songs have been covered by Alison Krauss, Waylon Jennings, Sam Bush, Jerry Douglas and BlackHawk.  BlackHawk's cover of Black's song, "That's Just About Right," was a Top 10 Country single in 1996.  BlackHawk's cover of Black's song, "King Of The World" was a Top 30 Country single in 1998.  Black also co-wrote the title track Circles Around Me with Sam Bush for his 2009 Grammy nominated album Circles Around Me.  Black has released 10 of his own self-produced albums and tours widely.  He is also recognized as a digital music pioneer by NPR for his podcast, "Black Tuesdays". The Great Dobro Sessions is a 1994 country music and bluegrass album featuring an all-star line-up of 10 American resonator guitar players, produced by dobro players Jerry Douglas and Tut Taylor.
Answer: mandolin