Drop C tuning

Drop C tuning is an alternative guitar tuning where at least one string has been lowered to a C, but most commonly refers to CGCFAD, which can be described as D tuning with a 6th string dropped to C, or drop D tuning transposed down a whole step. Because of its heavier tone, it is most commonly used in rock and heavy metal music.
Examples
CGCFAD tuning
- Alter Bridge's song "Isolation")
- Arch/Matheos on "Sympathetic Resonance"
- Chimaira on most songs after their first album.
- Metallica on the majority of songs in the St. Anger album
- Nickelback on most songs on their 2003 album The Long Road)
- Skillet on the song "Monster" (on "Monster")
CADGBE tuning
- Bob Dylan – predominantly in the period 1965-1966.
- John Mayer – on the song "Neon".
- Muse – on the song "Map Of The Problematique"
- Brad Richter – on the piece "Flirtation"
- The Tallest Man on Earth – on the song "The Sparrow and the Medicine".
CGDGBE tuning
- Richard Thompson on the song "Hope You Like The New Me"
- Soundgarden-on the song "Limo Wreck"