Question: Nic Offer and Grant Hart are considered to be which type of artist?

Context paragraphs:
Warehouse: Songs and Stories: Warehouse: Songs and Stories (1987) is the sixth and final studio album by alternative rock band Hüsker Dü, originally released by Warner Bros.  Records as a double album on two vinyl LPs.  The band dissolved following the tour in support of its release, in part due to disagreements between songwriters Bob Mould and Grant Hart over the latter's drug use.  This album, along with "Candy Apple Grey", showcases the increasing maturity of Mould and Hart's writing—a change which alienated some long-time fans.  This album is also known for its battle between the two songwriters, with Mould famously telling Hart that he would never have more than half of the songs on a Hüsker Dü album.

Nic Offer: Nic Offer (born 1972) is a New York City-based musician.  He is best known as the vocalist of the dance/punk band !!! , which he helped form in Sacramento, California in 1996.  Offer also played bass and keyboards for the electronic band Out Hud from 1996 until 2005.

Grant Hart: Grant Vernon Hart (March 18, 1961 – September 13, 2017) was an American musician, best known as the drummer and co-songwriter for the alternative rock and hardcore punk band Hüsker Dü.  After the band's breakup in 1988, he formed the alternative rock trio Nova Mob, where he moved to vocals and guitar.  His solo career became his main focus after the dissolution of Nova Mob in 1997.

2541: 2541 is the first solo EP from Grant Hart, formerly of the band Hüsker Dü.  It was Hart’s first solo release after the breakup of Hüsker Dü in January 1988 and was released as a 3-inch mini CD single and as 12-inch, 45 rpm vinyl single.

Oeuvrevue: The album is a collection of B-sides, live recordings, radio sessions and outtakes recorded by Grant Hart as a solo artist and as part of Nova Mob.  Originally released in a limited edition of 1000 copies to coincide with Hart’s fall 2010 European tour.

!!!: !!!  ( ) is an American dance-punk band that formed in Sacramento, California, United States, in 1996 by lead singer Nic Offer.  Members of !!!  came from other local bands such as The Yah Mos, Black Liquorice and Popesmashers.  They are currently based in New York City.  The band's seventh album, "Shake the Shudder", was released in May 2017.

Turn On the News: "Turn On the News" is a song by American rock band Hüsker Dü.  Written by Grant Hart, it is the 22nd track on their 1984 double album "Zen Arcade".  The song was never released as a single, but is considered one of their best songs.  The Rock and Roll Hall of Fame placed "Turn On the News" on its list of "500 songs that shaped rock and roll."

Hüsker Dü: Hüsker Dü was an American rock band formed in Saint Paul, Minnesota, in 1979.  The band's continual members were guitarist/vocalist Bob Mould, bassist Greg Norton, and drummer/vocalist Grant Hart.  Hüsker Dü first gained notability as a hardcore punk band, later crossing over into alternative rock.  Mould and Hart were the principal songwriters for Hüsker Dü, with Hart's higher-pitched vocals and Mould's baritone taking the lead in alternating songs.

The Argument (Grant Hart album): The Argument is the fourth and final solo studio album from Grant Hart, formerly of the band Hüsker Dü.  The album was released in 2013, four years before Hart's death.  It is a concept album based on John Milton's "Paradise Lost", and inspired by Hart's friendship with renowned beat author William S. Burroughs.  The album features guitar, keyboards, mallet instruments, and found sounds.  It was released to universal critical acclaim.

Out Hud: Out Hud was an electronic band formed in 1996 in the Bay Area of California and later based in New York City.  The band consisted of guitarist Nic Offer, bassist Tyler Pope, cellist Molly Schnick, vocalist/drummer Phyllis Forbes and mixer Justin Van Der Volgen.  Pope, Offer, and Van Der Volgen are also members of the similar band, !!! .  Their first album, "S.T.R.E.E.T. D.A.D." was instrumental.  For their second album, "Let Us Never Speak Of It Again", the group added vocals to their music, with Forbes singing lead while a drum machine filled in her usual role, assisted with Schnick on backing vocals.

Supporting paragraphs: Nic Offer Grant Hart
Answer: musician