Slipknot is an American heavy metal band formed in 1995 that has 9 members who all wear masks and uniforms. Some of their songs have been nominated for Grammys and they have sold over 20 million albums worldwide. Their self-titled debut album was released in 1999 and they have since released several successful studio and live albums. The band's lineup has changed over time but currently consists of 9 members including Corey Taylor on vocals.

2.  The name of the group is Slipknot, which means the loop. This is an
American band that performs music in the style of metal. The band is
formed in 1995. This group has got 9 members.

3.  Albums certified platinum and some of the songs were nominated for
the "Grammy" in the categories of "Best heavy metal song" and “Best
hard rock song.“ In 2006 the group was awarded the prize in the
category "Best Metal Performance" for the song «Before I Forget». The
group has sold over 20 million albums in the world.

4.  The first album was called Mate.Feed.Kill.Repeat. and there were 8
tracks.
 All members of the group wear masks and their uniforms.

5.  Regardless released albums:
1992 — The Basement Sessions
1996 — Mate.Feed.Kill.Repeat
1998 — Roadrunner Records Demo
2005 — 9.0: Live
Studio albums:
1999 — Slipknot
2001 — Iowa
2004 — Vol. 3: The Subliminal Verses
2008 — All Hope Is Gone
Video albums:
1999 — Welcome to Our Neighborhood
2002 — Disasterpieces
2006 — Voliminal: Inside the Nine

6.  The members of the group changed more than five times.
 Now the group is composed of nine members:
 1. Corey Taylor - vocal
 2. James «Peach» Ruth – guitar
 3. Mick «Log» Thomson – guitar
 4. Joey «Superball» Jordison - drums
 5. Chris «Picklenose» Feng - percussion, backing vocals
 6. Sean «Clown» (formerly «Kong») Crahan - percussion, backing vocals
 7. Sid «Monkeyboy» Wilson - DJ
 8. Craig "133 Mhz», Jones - keyboards, samples