Question: Matt Starr (born October 25) is an American born drummer, singer, songwriter and producer, in 2013 Starr began playing with Burning Rain which was formed by Whitesnake guitarist Doug Aldrich and a vocalist Keith St John, from which California-based hard rock band, that originally featured Ronnie Montrose on guitar?
Context: William "Bill" Church (born 9 December 1946) started out playing bass in a band called Sawbuck in 1969, with Mojo Collins, Starr Donaldson, Ronnie Montrose and Chuck Ruff.  As the band was beginning to record their first album, Montrose and Church left Sawbuck to join Van Morrison on his "Tupelo Honey" album.  When Montrose rejoined Ruff to record Edgar Winter Group's smash "They Only Come Out at Night", Church remained with Morrison and appeared on the "Saint Dominic's Preview" LP.  When Montrose left Winter to form his own hard rock outfit, Montrose, Church was recruited along with singer Sammy Hagar and drummer Denny Carmassi.  Church was replaced on the second Montrose album "Paper Money" by Alan Fitzgerald. Doug Aldrich (born February 19, 1964) is a Los Angeles-based hard rock guitarist.  He founded the band Burning Rain with Keith St. John in 1998 and has played previously with the bands Whitesnake, Dio, Lion, Hurricane, House of Lords, Bad Moon Rising and Revolution Saints.  He is currently in the band The Dead Daisies.  He has also released several solo albums.  In 2015, Doug was touring as guitar player of former Deep Purple bassist and vocalist Glenn Hughes band.  In early 2016 it was announced that he would be replacing Richard Fortus as guitarist of The Dead Daisies, as Fortus is leaving that band to perform with the Guns N' Roses reunion. Bangalore Choir is an American hard rock band formed in 1991.  They were formed by the former frontman of Accept, David Reece, and guitarists Curt Mitchell and John Kirk (both formerly of Razor Maid).  Joining them from Hericane Alice, was bassist Ian Mayo and Jackie Ramos on drums, future members of the band Bad Moon Rising with Whitesnake/Dio guitarist Doug Aldrich and Lion/Tytan vocalist Kal Swann.  Their debut album was produced by Max Norman, and featured songs co written by Jon Bon Jovi and Aldo Nova.  Despite having big names involved, the album was not a success. Bad Moon Rising was a rock band that rose to superstar status in Japan with a series of hard rock albums led by Scottish born vocalist Kal Swan (real name Norman Swan) and guitarist Doug Aldrich. Matt Starr (born October 25) is an American born drummer, singer, songwriter and producer.  He is currently touring with Mr. Big filling for drummer Pat Torpey on the band's "Defying Gravity" (Frontiers Records) World Tour.  Starr performed on the 2017 release which was produced by Kevin Elson (Journey, Lynyrd Skynyrd). " ...The Stories We Could Tell" (Frontiers Records) World Tour.  In 2012 Starr joined guitarist and founding KISS member Ace Frehley.  He played drums on Ace Frehley's 2014 release "Space Invader" (eOne Records).  Starr was asked to play on the record after performing a few shows with Frehley in 2012.  He is the only drummer other than "Late Night With David Letterman" drummer Anton Fig to play on the entirety of one of Frehley's records.  The 2014 release drew comparisons to 1970's KISS and Frehley's 1978 solo album.  Starr also performed on Frehley's next release "Origins Vol 1" which featured the Free cover "Fire and Water" with KISS frontman Paul Stanley on lead vocals as well as appearances by Slash, and others.  While remaining with Frehley, in 2013 Starr began playing with Burning Rain which was formed by Whitesnake guitarist Doug Aldrich and Montrose vocalist Keith St John.  Starr has also toured with Rainbow frontman Joe Lynn Turner Love/Hate, Quiet Riot vocalist Kevin DuBrow and others. Revolution Saints is an American supergroup conceptualized by Frontiers Records president Serafino Perugino, and formed by Jack Blades of Night Ranger, Damn Yankees and Shaw Blades; Deen Castronovo of Journey, Ozzy Osbourne, Bad English and Hardline; and Doug Aldrich of Whitesnake, Dio, Lion, Bad Moon Rising, Burning Rain and The Dead Daisies. Burning Rain is a band formed by guitarist Doug Aldrich (Whitesnake) and singer Keith St John (Montrose) in 1998.  Joining the group were drummer Alex Makarovich (ex-Steelheart) and Ian Mayo (ex-Hurricane Alice) on bass. Keith St John is an American rock singer, songwriter, composer, producer and multi-instrumentalist.  He is best known for his work as the frontman for the hard rock bands Montrose and Burning Rain. Burning Rain is the debut studio album by the hard rock band Burning Rain.  It was released in 1999 on Pony Canyon. Montrose was a California-based hard rock band.  The band originally featured Ronnie Montrose on guitar and future solo artist and Van Halen frontman Sammy Hagar.  Rounding out the original foursome were bassist Bill Church and drummer Denny Carmassi.
Answer: Montrose