James Russell Mercer (born December 26, 1970) is an American singer-songwriter, guitarist, and musician.
 He is the founder, vocalist, lead singer-songwriter, and sole remaining original member of the indie rock group The Shins.
 In 2009, Mercer and producer Danger Mouse formed the side project Broken Bells, for which they released a self-titled album in March 2010, followed by "After the Disco" in 2014.
 Mercer has also acted, appearing in Matt McCormick's feature film "Some Days Are Better Than Others", which premiered in 2010.
In mathematics, specifically functional analysis, Mercer's theorem is a representation of a symmetric positive-definite function on a square as a sum of a convergent sequence of product functions.
 This theorem, presented in , is one of the most notable results of the work of James Mercer.
 It is an important theoretical tool in the theory of integral equations; it is used in the Hilbert space theory of stochastic processes, for example the Karhunen–Loève theorem; and it is also used to characterize a symmetric positive semi-definite kernel.
James Mercer (February 26, 1736 – October 31, 1793), also known as William James Mercer, was an American soldier, jurist and political figure.
"New Slang" is a song by American rock band The Shins, released on February 19, 2001 as the lead single from the group's debut studio album, "Oh, Inverted World" (2001).
 Written by guitarist and vocalist James Mercer, it concerns his hometown of Albuquerque, New Mexico and his experiences there in his late 20s.
 The lyrics are fueled with "angst and confusion," as Mercer was finding himself constantly depressed and disconnected from his friends and scene.
 The song attracted attention from Sub Pop Records, who issued the song as a single in February 2001.
 The buzz created by the song led to positive press for the group's debut album, "Oh, Inverted World".
James Mercer Garnett (June 8, 1770 – April 23, 1843) was a nineteenth-century politician and planter from Virginia.
 He was the brother of Robert S. Garnett, the first cousin of Charles F. Mercer, and the grandfather of Muscoe Russell Hunter Garnett.
Jesse Sandoval is the former drummer of American indie rock group The Shins.
 Sandoval initially formed Flake with singer-songwriter James Mercer, guitarist Neal Langford and bassist Marty Crandall in Albuquerque, New Mexico in 1992.
 Sandoval and Mercer then went on to form The Shins as a side project, intending to play as a duo, but were eventually joined again by Marty Crandall on keyboard and Dave Hernandez on bass.
 Sandoval, along with other band members, now resides in Portland, Oregon.
Broken Bells is an American indie rock band composed of artist-producer Brian Burton (better known as Danger Mouse) and James Mercer, the lead vocalist and guitarist for the indie rock band The Shins.
 Broken Bells compose and create as a duo, but are joined by Dan Elkan and Jon Sortland when performing live.
 The previous live band included Conor Oberst and the Mystic Valley Band sidemen Nate Walcott and Nik Freitas, and Jonathan Hischke and Dan Elkan, both ex-members of Hella.
 Following their 2010 self-titled debut album, the duo released an EP, "Meyrin Fields", in 2011 and their second studio album, "After the Disco", on February 4, 2014.
Luísa Hanae Matsushita (born February 25, 1984), known by her stage name Lovefoxxx, is the lead singer of the Brazilian indie band Cansei de Ser Sexy (CSS).
Andrew James Mercer (born 31 May 1979) is a former English cricketer.
 Mercer was a right-handed batsman who bowled right-arm fast-medium.
 He was born at Blackburn, Lancashire.
Port of Morrow is the fourth studio album by American rock band The Shins.
 The album was released March 19, 2012, on Aural Apothecary and Columbia Records and was co-produced by Greg Kurstin and frontman James Mercer.
 The Shins' first studio album in five years, following the release of 2007's "Wincing the Night Away", followed major lineup changes in the group: founding members Dave Hernandez (bass, guitar), Marty Crandall (keyboards) and Jesse Sandoval (drums) departed in 2009.
 Mercer deemed it an "aesthetic decision" to part ways with his bandmates, and in the interim, founded side project Broken Bells with Danger Mouse.

Question: WHat are both Lovefoxxx and James Mercer? 
Answer: singer