Mt. Helium
Group · United States · Los Angeles · formed 1999
American rock band
official homepagedatabasedatabasedatabase
Also known as Apex Theory
Timeline
1990s
· Member joins
Andy Khatchaturian joins the band
source: musicbrainz
· Member joins
Art Karamian joins the band
source: musicbrainz
· Member joins
David Hakopyan joins the band
source: musicbrainz
· Member joins
Sammy J. Watson joins the band
source: musicbrainz
2000s
· Debut release
Debut release: The Apex Theory
First documented Single in the MusicBrainz discography.
source: musicbrainz
· Member leaves
Andy Khatchaturian leaves the band
source: musicbrainz
Biography
Biography
Mt. Helium, formerly known as the Apex Theory, was an American rock band from Los Angeles, California, that was known for playing Mediterranean music mixed with progressive rock. The band released three studio albums and three extended plays.
History
The Apex Theory was formed in 1999 by Armenian-American musicians Ontronik "Andy" Khachaturian, David Hakopyan (drummer and bass player of Soil / System of a Down respectively), and Art Karamian following Khachaturian's injury and subsequent departure from System of a Down. Sammy J. Watson joined the band after they were unable to find a committed drummer. The band released its first extended play, Extendemo, in 2000. The following year, they signed with DreamWorks Records, releasing their second EP The Apex TheoryThe Apex TheorySpotify (search)YouTube Music (search)Tracklist · 2 tracks1Shhh (Demo)4:3224Ra's (Demo)2:40 on October 9, 2001. The band performed at the main stage during the 2001 Warped Tour, and as co-headliners at the 2002 MTV2 tour.
On April 2, 2002, the band released its first album, Topsy-Turvy
Topsy-TurvySpotify (search)YouTube Music (search)Tracklist · 12 tracks1Add Mission3:352Mucus Shifters2:313Come Forth3:164Shhh... (Hope Diggy)3:205Drown Ink3:096Bullshed4:597That's All3:258Bravo3:089Apossibly4:1410Right Foot3:5211Aisle Always3:5412In Books4:00. It peaked at No. 6 on the Billboard Heatseekers chart and No. 157 on the Billboard 200. Months after the album's release, Khachaturian left the band, and they began to audition new vocalists before deciding that Karamian would take over as the band's vocalist, shifting the band from a quartet to a power trio. The band released an EP in 2004 entitled inthatskyissomethingwatching
InthatskyissomethingwatchingSpotify (search)YouTube Music (search)Tracklist · 7 tracks1Lift Introduction1:132Lift3:223Get To Work4:314Mirrors3:375Burglar Soup4:146Fasten3:087Glue Me3:16. After changing the name to Mt. Helium, the band released its second album, Faces, as a digital download on June 3, 2008.
Musical style
Former vocalist Ontronik Khachaturian described the band's sound as a "heavy Mediterranean groove". The Michigan Daily writer Sonya Sutherland wrote, "The Apex Theory combines a heavy drum support, melodic guitars and honey sweet vocals to provide an entertaining and emotional message." The band's musical style was influenced by Mediterranean, Middle Eastern and Near Eastern music. PopMatters described Topsy-Turvy as "an energy-filled fusion of progressive and modern rock."
The MTV News writer Jon Wiederhorn wrote that "the Apex TheoryThe Apex TheorySpotify (search)YouTube Music (search)Tracklist · 2 tracks1Shhh (Demo)4:3224Ra's (Demo)2:40's multi-textured music [...] combines metal, prog-rock, Mediterranean music and even jazz. And the off-kilter rhythm, skittering drums, whirlpool guitars and aggressive vocals of 'Shhh ... (Hope Diggy)' are a perfect taster for the band's debut album". Deseret News said that "Apex Theory's progressive punk mixed exotic music signatures with psychedelic rock". As The Apex Theory, they were also labelled nu metal.
Band members
David Hakopyan — bass guitar (1999–2008)
Art Karamian — guitar, vocals (1999–2008)
Ontronik "Andy" Khachaturian — vocals (1999–2002)
Sammy J. Watson — drums (1999–2008)
Albums
Topsy-Turvy (2002) (as The Apex Theory)
Faces (2008) (as Mt. Helium)
Extended plays
Extendemo (2000) (as The Apex Theory)
The Apex Theory (2001) (as The Apex Theory)
Inthatskyissomethingwatching (2004) (as The Apex Theory)
Lightpost (2007) (as The Apex Theory)
Promotional releases
Random Bursts (2001) (as The Apex Theory)
Discography & profile
Normalised profile
Percentiles are computed over every artist in the database, so a tier-3 artist can still sit in the 95th percentile on a single axis.
| Metric | Value | Percentile |
|---|---|---|
| Wikipedia language versions | 15 | 72.5th |
| Spotify monthly listeners | — | no data |
| Release groups in DB | 7 | 80.4th |
| Studio albums | 2 | 78.8th |
| Awards recorded | 0 | 0th |
| Timeline events | 9 | 85.5th |
| Recording span (years) | 7 | 21th |
| Genres | 1 | 56th |
Percentiles are computed at render time; missing values mean the artist has no data on that axis.
Discography (7 release groups · 2 studio albums)
Albums · 2
2001 · studio album
Search SpotifySearch YouTube Music
Tracklist · 12 tracks · 42:06
1Lull-a-bye1:322In Books2:263Apossibly4:164Shhh...3:195Bravo3:076Drown Ink3:087Bullshed4:578That's All!3:319Add Mission3:3610Right Foot3:5011Calm-it4:3012Aisle Always3:542002 · studio album
Search SpotifySearch YouTube Music
Tracklist · 12 tracks · 43:23
1Add Mission3:352Mucus Shifters2:313Come Forth3:164Shhh... (Hope Diggy)3:205Drown Ink3:096Bullshed4:597That's All3:258Bravo3:089Apossibly4:1410Right Foot3:5211Aisle Always3:5412In Books4:00
Single · 1
| Cover | Year | Title | Notes | First release |
|---|---|---|---|---|
| 2000 | The Apex TheorySearch SpotifySearch YouTube MusicTracklist · 2 tracks · 7:121Shhh (Demo)4:32 24Ra's (Demo)2:40 | 2000 |
EP · 4
| Cover | Year | Title | Notes | First release |
|---|---|---|---|---|
| 2000 | ExtendemoSearch SpotifySearch YouTube MusicTracklist · 5 tracks · 17:271Shhh...4:33 24ra's2:44 3That's All3:49 4Swing This2:26 5Aisle Always3:55 | 2000 | ||
| 2001 | The Apex TheorySearch SpotifySearch YouTube MusicTracklist · 5 tracks · 18:541Shhh... (Hope Diggy)3:19 2Bullshed4:58 3Swing This2:20 44RA's2:49 5Trust Ease5:28 | 2001 | ||
| 2004 | InthatskyissomethingwatchingSearch SpotifySearch YouTube MusicTracklist · 7 tracks · 23:211Lift Introduction1:13 2Lift3:22 3Get To Work4:31 4Mirrors3:37 5Burglar Soup4:14 6Fasten3:08 7Glue Me3:16 | 2004 | ||
| 2007 | LightpostSearch SpotifySearch YouTube MusicTracklist · 1 track · 15:251Lightpost15:25 | 16 January 2007 |
Stats & PK
Percentile within all 23,672 published artists.Put Mt. Helium head-to-head →
| Metric | Value | Percentile |
|---|---|---|
| Wikipedia language versions | 15 | 72.5th |
| Spotify monthly listeners | — | no data |
| Release groups in DB | 7 | 80.4th |
| Studio albums | 2 | 78.8th |
| Awards recorded | 0 | 0th |
| Timeline events | 9 | 85.5th |
| Recording span (years) | 7 | 21th |
| Genres | 1 | 56th |
Awards & honours
Line-up
| Name | From | To | Role |
|---|---|---|---|
| Andy Khatchaturian | 1999 | 2002 | |
| Art Karamian | 1999 | present | |
| David Hakopyan | 1999 | present | |
| Sammy J. Watson | 1999 | present |
Where this record comes from
aliases/urls—musicbrainz · CC0 · retrieved 10 October 2026
https://musicbrainz.org/artist/a5f70944-d149-44e2-9d20-40f75a59d1abdiscography—musicbrainz · CC0 · retrieved 10 October 2026
https://musicbrainz.org/artist/a5f70944-d149-44e2-9d20-40f75a59d1abcore—wikidata · CC0 · retrieved 10 October 2026
https://www.wikidata.org/wiki/Q1372242genre—wikidata · CC0 · retrieved 11 October 2026
https://www.wikidata.org/wiki/Q1372242seed-list—wikipedia · CC BY-SA 4.0 · retrieved 10 October 2026
https://en.wikipedia.org/wiki/Mt._Heliumbiography—wikipedia-en · CC BY-SA 4.0 · retrieved 10 October 2026
https://en.wikipedia.org/wiki/Mt._Helium
Why this artist is in the database
- List of nu metal bands
- List of progressive rock artists
Tier rule: curated genre/region list
Image: no portrait (not displayed: the licence credit is missing)
Wikidata: Q1372242 · MusicBrainz: a5f70944-d149-44e2-9d20-40f75a59d1ab
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