Question: Band of Skulls and Dada are two three piece bands, the former from Southampton and the latter from California, comprising a guitarist, a bass performer and which other category of instrumentalist?
Context: The Holy Sisters of the Gaga Dada were an eclectic band originally from Santa Cruz, California, USA formed in 1981.  They were voted "Best Alternative Rock Band of the Year" by L.A. Weekly.  The collaboration of keyboardist Mary Jean Shaffer and guitarist Blancah Black, the Holy Sisters reveled in eccentric, quasi-religious imagery and feminist politics.  Other original members included Heidi Puckett (bass) and Jeff Grubic (tenor sax).  As the band morphed from conceptual entity to frequent club performers, Black left and two new members were added, Jill Fido (bass) and Charles Bingham (drums).  Kim Sockit later replaced Puckett, and Zero Jessephski, Jr. replaced Bingham, making the Holy Sisters of the Gaga Dada an all-female band.  The group would later move to Hollywood, California where they were featured in "Once Upon Her Time," a TV program about women in the '80s which aired on the Lifetime Cablevision Network. John Collins (born 27 April 1970) is the mainstay bass guitarist for Australian rock band Powderfinger since 1989.  He is one of the founding members of the band, along with guitarist Ian Haug, forming at their high school, Brisbane Grammar School as a three piece.  Powderfinger has released seven studio albums, a greatest hits album and a double CD live album.  After they released their best of album, "" in 2004, they decided to take a break.  During the hiatus, Collins played with fellow Powderfinger member, Darren Middleton in his new band Drag on a number of occasions, as well as performing with Ian Haug and Steven Bishop in The Predators.  Collins is often referred to as "J.C." by his fellow band members, as they are his initials and to distinguish him from the group's drummer Jon Coghill.  Initially, the nickname was given to him following the group's song "JC" from their second album, "Double Allergic", which referred to Jesus Christ. Crystal Skulls is a Los Angeles, California-based indie pop band, named after a legend that there are 13 ancient crystal skulls hidden worldwide, which have mystical powers.  Known for their intelligent, smooth poppy sound, the band was started in 2004 in Seattle by Christian Wargo, with a lineup comprising drummer Casey Foubert and bass guitarist Yuuki Matthews.  They toured the United States with Black Mountain and Helio Sequence, and released albums in 2005 and 2006, during which time they shared a practice space with fellow Seattle band Fleet Foxes. Tenement is a three piece rock band from Appleton, Wisconsin formed in 2006.  They are often associated with the American hardcore punk scene.  Their recorded output has been described as everything from "noise pop" to "fuzz punk", while in a live setting they are often known for experimentation, improvisation, and high-energy performance.  The visual art of singer/guitarist Amos Pitsch is associated with most of their records, as well as several records by other notable punk and hardcore bands.  In 2016, they were included in "Rolling Stone's" "10 Great Modern Punk Bands". Band of Skulls are an English rock band from Southampton, consisting of Russell Marsden (guitar, vocals), Emma Richardson (bass, vocals), and Matt Hayward (drums).  The group formed after meeting in college, although Marsden and Hayward have been friends since school.  Band of Skulls have released four studio albums, their most recent being "By Default" in May 2016. Matt Lebofsky is an Oakland, California-based multi-instrumentalist and composer.  Growing up in New York he studied piano/composition with Arthur Cunningham from 1978-1988.  As a performer/composer he is currently active in several bands such as miRthkon, MoeTar, Secret Chiefs 3, Bodies Floating Ashore, The Fuxedos, Three Piece Combo, Research & Development, Midline Errors, Fuzzy Cousins and JOB.  He is also a long-time prolific member of the Immersion Composition Society Origin Lodge.  He toured nationally in 2006 as a member of Faun Fables, and throughout 2000-2001 as a member of Species Being, and released three albums and toured internationally with Mumble & Peg from 1995-2002. Radio Massacre International is a trio of British musicians, Steve Dinsdale (Keyboards and Drums), Duncan Goddard (Keyboards and Bass), and Gary Houghton (Guitar, Synth).  They specialize in improvisational experimental electronic music, utilising vintage synthesizers and sampled sounds alongside electric guitar.  They are also leading exponents of the mellotron keyboard.  More recently they have begun to incorporate Bass Guitar and Drums by varying degrees in an attempt to stretch musical boundaries within the confines of a three piece.  Their music has been described alternatively as ambient music, space rock, Krautrock, New Age, Berlin School, and various other terms, although the band itself prefers the label "organic music".  Points of reference include bands ranging from Tangerine Dream to "Rabbit"-era Chas and Dave. Elder is a three piece stoner rock band from Boston, Massachusetts.  The band consists of members: Nick DiSalvo (guitar, keyboard and vocals), Matt Couto (drums), Jack Donovan (bass guitar), and "previously" Chas Mitchell (bass guitar).  Elder have released five full-length albums since 2006 and have also released other demos, EPs and a split album with Queen Elephantine.  Nick DiSalvo claims that Colour Haze and Dungen are "the bands that have really influenced the methodology or the philosophy behind the new direction". Dada is a three piece rock band from California (United States).  The band is made up of Michael Gurley (guitar/co-lead vocals), Joie Calio (bass/co-lead vocals) and Phil Leavitt (drums). Kevin Borich Express is an Australian rock band formed in 1976 by the New Zealand born Kevin Borich.  After the demise of New Zealand's very successful band The La De Das Kevin Borich moved to Australia and formed the group Kevin Borich Express that featured Harry Brus on bass guitar (ex-Blackfeather) and Barry Harvey on drums (Wild Cherries, Chain) and they recorded a track "The End of Me" before the line-up changed and Reuben San Fiansco took up bass guitar and Gil Matthews replaced Harvey on drums.  Subsequent line-ups were typically a three piece with a succession of bass guitarist and drummers.  They released their debut single, "Goin' Somewhere" in October using Fiansco, and John Annas on drums and followed this up recording and releasing the bands debut album, "Celebration!"  in 1977 replacing the bass part with riff master Tim Partridge (Mighty Kong, The Johnny Rocco Band).  The album was critically acclaimed by the media and peaked in the top 30 on the.
Answer: drums