|Genres||Post-metal, Experimental rock|
|Labels||Fullsteam, Kireru, Earache, Svart|
|Associated acts||Asa, Gasthaus Orkesteri, Jumalan Lapset, Lohtaja Sea Tragedy, Minus SF, Myllykangas, Pofony, Sattalite, Secret North Ox, Soundsleep, Taantumus, Uhrijuhla, Utunen, Viitasen Piia|
|Past members||Johannes Nygård (2001–2013)|
Henri Kuittinen (2005)
The band's sophomore album Noir, released in 2006, still drawing from modern sludge also introduced subtle jazz leanings, heavy use of mellotron and experimentation with unconventional rock instruments such as the saxophone and the flute.
Their third album Providence, released in 2009, marked another experimental shift in style, taking some distance from the more instrumental material, Callisto composed a vocal record presenting a new member Jani Ala-Hukkala handling the vocals. The songs on "Providence" are built upon layers of melodies, using a broader palette they have coloured their sound with twangy guitars, mellotrons, prog rock overtones and a singing style that can be traced back to 90s-era vocalists like Layne Stayley.
In 2015 the band returned after some years of relatively quiet existence with a new album Secret Youth – their fourth full length. Secret Youth is a contradictory concoction of more straightforward elements mixed with a strong and somber experimental overtone, or "progressive noise rock" as the band themselves have described it. Callisto's cryptic lyrics often revolve around theological and existential themes and more difficult subjects, such as spiritual abuse.
Callisto has headlined several tours in Europe from 2004 to 2015. They also opened for High on Fire on their 2005 United Kingdom tour. In March 2007 Callisto showcased in Canada and the United States, playing at the Canadian Music Week in Toronto and the South by Southwest festival in Austin, Texas.
- True Nature Unfolds (2004)
- Noir (2006)
- Providence (2009)
- Secret Youth (2015)
- Jani Ala-Hukkala - vocals
- Markus Myllykangas – guitar, backing vocals
- Tero Holopainen – guitar
- Juho Niemelä – bass
- Ariel Björklund – drums
- Arto Karvonen – keyboards
- Jani Rättyä - live percussion, backing vocals