Question: What band from San Francisco, California employs Amos as a multi-instrumentalist?

Context paragraphs:
Ustream: Ustream is an American live video streaming and video hosting company.  It is based in San Francisco and has more than 180 employees in their San Francisco, Los Angeles, and Budapest offices.  Company partners include Panasonic, Samsung, Logitech, CBS News, PBS NewsHour, Viacom, and IMG Media.  It received $11.1 million in Series A funding for new product development from DCM (Doll Capital Management) and investors Labrador Ventures and Band of Angels.  It is owned by an American company of the same name, Ustream, Inc., based in San Francisco, California.  Ustream was one of the live game streaming services for Sony's PlayStation 4.

Kathleen McGuire: Dr. Kathleen Alison McGuire (born in 1965 in Melbourne) is a choral and orchestral conductor, arranger, composer, music educator, vocalist and multi-instrumentalist.  Known also for her work with social justice and human rights organizations, from 2000 to 2010 she served as the first female artistic director and conductor of the San Francisco Gay Men's Chorus – the world's first openly gay choral organization – and in 2010 she established Singers of the Street: a choir of people affected by homelessness in San Francisco.  She became a US citizen in 2011 and in 2013 returned to Australia to serve as director of music at Queen's College (University of Melbourne) and co-artistic director of the School of Hard Knocks.  In 2006 she was a grand marshal in the San Francisco LGBT Pride Parade.  Her contributions have officially been recognized by the California Senate and State Assembly, and "Kathleen McGuire Day" was designated twice in her honor by San Francisco mayors Gavin Newsom (22 April 2010) and Edwin Lee (6 April 2013).

Om (band): Om (sometimes stylized as OM) is an American heavy metal band from San Francisco, California.  Formed as a duo in 2003 by the rhythm section of the band Sleep, OM is currently a trio.

The Final Solution (American band): The Final Solution (also known as Earth Mother and the Final Solution) was an American garage rock band formed in San Francisco, California, in 1965.  An early group in the development of what later became known as the San Francisco Sound, the Final Solution contradicted its contemporaries with their controversial name and grim lyrics composed by lead guitarist Ernie Fosselius and bassist Bob Knickerbocker.  Although the group never released any recordings in their career, the band was pivotal in the San Francisco's live music scene.  A recording of the Final Solution performing at the Matrix in 1966 exists and is available, particularly "So Long Goodbye", which appears on "Pebbles, Volume 22".

The Sandwitches: The Sandwitches are an American garage-folk band based in San Francisco, California.  San Francisco musicians, such as The Fresh & Onlys, Sonny Smith, and Tim Cohen have had The Sandwitches’ vocals featured on their recordings and performances.  They are considered an integral part of the San Francisco indie rock scene.

Francisca Valenzuela: Francisca Valenzuela (born March 17, 1987 in San Francisco, California) is an American-born Chilean singer, poet, and multi-instrumentalist.  Valenzuela was born and raised in San Francisco, California, where she resided until the age of 12, before moving to Santiago, Chile.  She gained to popularity in Chile and Latin America, following the release of her debut album, "Muérdete La Lengua" in June 2007.  Her second album, "Buen Soldado" followed in March 2011.  Valenzuela has earned both gold and platinum album certification in Chile.

Holy Sons: Holy Sons (band) is built around Portland songwriter and drummer Emil Amos.  Amos is notable for releasing "genre-bending" albums, according to "LA Weekly" music reviewer Chris Martins, and for being a prolific songwriter; one account in "Spike Magazine" suggests he has written over a thousand songs.  Amos is also a multi-instrumentalist for groups such as Grails and Om and Lilacs & Champagne.  Amos was born of the lo-fi home recording movement of the '80s and early '90s.

PS John H Amos: John H Amos is a paddlewheel tugboat built in Scotland in 1931.  The last paddlewheel tug built for private owners, now owned by the Medway Maritime Trust.  She is one of only two surviving British-built paddle tugs, the other being "Eppleton Hall" preserved at the San Francisco Maritime National Historical Park in San Francisco, California.

Archbishop Riordan High School: Archbishop Riordan High School is a diocesan, all-boys Catholic high school established by the Society of Mary in San Francisco, California.  It is part of the Roman Catholic Archdiocese of San Francisco.  Originally called Riordan High School, the school was named after Archbishop Patrick William Riordan, the second Archbishop of San Francisco, and opened in the fall of 1949.  In 1990, "Archbishop" was officially added to the school's name.  The school is known for its historically successful basketball, wrestling, track and field, football, marching band, concert band, and theatre programs.

Wintour is Coming: Wintour is Coming was a headlining concert tour by American rock band Fall Out Boy in support of their latest album, "American Beauty/American Psycho", released in 2015.  It began on February 25, 2016 in San Juan, Puerto Rico, and ended on March 27, 2016 in San Francisco, California.  Opening acts included Puerto Rican pop punk band Late Night Drive in San Juan, PVRIS and Awolnation in most of the tour dates and Finish Ticket in San Francisco.  The tour, announced in October 2015, played a total of twenty-three concerts over the course one month in the Caribbean and North America, with one of them at Universal Orlando Resort's Mardi Gras 2016.  A San Francisco date was announced on January 5, 2016.

Supporting paragraphs: Holy Sons Om (band)
Answer: Om