INTERNAL SUFFERING was born in Pereira (Colombia) during November 1996 from the ashes of their previous band SUFFER as a cuartet when Fabián (Vocals), Leandro (Guitars), Andrés (Bass) & Jorge (Drums) decided to play an even faster, heavier & more brutal Death Metal style.

1996 were entirely dedicated to play as many shows as they could with some of the best colombian bands. Also, in March '97 the band had the chance to play along with the respected underground US band INCANTATION during their small tour in Colombia, receiving a great acclamation from the audience. After this show, Fabián (Vocals) was kicked out of the band and was inmediately replaced by Fabio.

In September 1997, colombian Death Metal label CLINIC RECORDS offered the band to open for the cult Thrash/ Death Metal band SODOM during their world tour '97, which meant the biggest live-audience for the band at the moment and in the best place of Medellin, in front of 4.500 people. The band was acclaimed again, receiving very good critics & reviews, establishing as the most brutal, devastating band ever to emerge from Colombia. In the music channel MTV was catalogued as one of the most intense & brutal southamerican bands. A couple of months after this killer show, Jorge (Drums) was kicked out of the band due to irreconciliable musical differences, so drums duties were taken over by Edwin.

In March '98 the band entered the studio again to record their first album, but the result wasn't satisfactory due to the lack of experienced engineers & professional recording studios, so the band decided to wait some more time till they found a proper place to record the album. After playing some shows and rehearsing constantly, the band decided to recruit Fabio on Drums in replace of Edwin.
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1999 was the time to enter the studio once again with the intention to record their long awaited CD debut "Supreme Knowledge Domain". This time the result couldn't be better so the band decided to send a sample of the recording to one of the most important Death Metal labels worldwide REPULSE RECORDS/ QABALAH PRODUCTIONS who inmediately showed their interest and signed the band to release the album. The album was unleashed in September 1st. 2000 and it's selling very well worldwide. A couple of days after having recorded the album, drummer Fabio had to leave the band, so Edwin who was the previous drummer replaced him, joining the band again.

In April 2000, the band entered the studio again to record their "Promo 2000" which features three new tracks plus an improved version of their cult track "Outside Dwellers", & what you can expect is one of the most brutal shit released during the new millenium. This Promo called the attention of many labels worldwide, one was Japan's MACABRE MEMENTOS RECORDS which offered the band to release a 6 trax MCD entitled "Unmercyful Extermination". This MCD was released in March 2001.

In April 2001, the band had to cancel their North American tour with BRODEQUIN & VOMIT REMNANTS as well as the Ohio Death Fest 2001 due to problems with their papers & american visas.

After many proposals from around the globe, in September 2001, the band decided to sign with cult dutch label DISPLEASED RECORDS to release their 2nd full length album. INTERNAL SUFFERING started the studio sessions almost immediately, during more than 10 days the band concentrated 100% on the new recording, creating one of the most technical, complex, brutal & intense Death Metal albums of the year. The new album is entitled "Chaotic Matrix" and was released on April 2002.

In February 2002, the band did a colombian mini tour with Death Metal gods CANNIBAL CORPSE which meant some of the biggest turnouts for the band to date, playing in front of 1000 people aprox. each night.

Finally, while "Chaotic Matrix" album was released, the band embarked in a North American Tour, which included a successful appearance at the Ohio Death Fest 2002, where the band was voted 3rd in the general poll!

After this successful tour, the band returned to New York in order to play two awesome shows in the big apple and prepare their live appearances at the Massachusets Death Fest and Xtreme Benefest in Detroit along with the likes of IMMOLATION, DEVOURMENT, FLESHGRIND, LIVIDITY, INTERNAL BLEEDING, ANAL BLAST, among tons more. The band appeared at both festivals and got an amazing response from the audience, establishing once more as a highly respected South American brutal Death Metal force in the american scene.

In April 2003, INTERNAL SUFFERING schedules one of the biggest tours in its history called: CHAOS OVER EUROPE TOUR 2003 with around 80 dates in almost all european countries and appearances at some of the biggest underground festivals like FUCK THE COMMERCE FEST (Germany), BANDS BATTLE FESTIVAL (Germany), STEEL WARRIORS REBELLION FESTIVAL (Portugal), OBSCENE EXTREME FESTIVAL (Czech Rep.), SHITFEST (Slovakia), KALTENBACH OPEN AIR FEST (Austria), among others.

Original drummer Fabio Ramirez, having since made his name with INFERNAL HATE and CARNAL, made a return to the INTERNAL SUFFERING drum position in November of 2003. Progress would be marred though as guitarist Leandro broke his arm. Back in action, the band entered Mana Studios in Tampa, Florida in April of 2004 to record a new album 'Choronzonic Force Domination'. Erik Rutan of HATE ETERNAL/ex-MORBID ANGEL would be at the production helm. The band headed up the 'Brutal Domination' US tour that August, heading up a pack comprising INCINERATE, STABWOUND and EMETH.

In August 2004, Leandro Quiza (Guitar) was kicked out of the band due to irreconciliable personal and musical differences. A replacement was found in talented Japanese guitar player Makoto Mizoguchi. 3 new songs were composed with the new lineup and the band immmediately entered Mana Studios once again in order to record their infamous "Promo 2005" which landed 'em a deal with California's death metal label UNIQUE LEADER RECORDS. After the promo recording, the band kept on doing as many shows as possible across North America including a West Coast Tour as headliner along with the likes of EMETH, VICTIMAS and END TO END.

As soon as the tour ended, the band returned to New York and continued writing the songs for their 4th full length album entitled "Awakening of the Rebel"which is recorded in January 2006 at Mana Recording Studios (CANNIBAL CORPSE, HATE ETERNAL, etc) with Erik Rutan (HATE ETERNAL, ex-MORBID ANGEL) in the engineering seat.

Most of the new material is a progression from what you’ve heard from INTERNAL SUFFERING in the past, the song structures are way more dynamic, complex and intense while retaining a high level of speed and brutality which have been trademarks of INTERNAL SUFFERING's style!.

Once again the line-up changes as guitarist Makoto leaves the band due to musical differences and in his replacement guitarist Andres Usma (ex-PUSTULATED) is called to fill the position. Finally, a 100% colombian line-up is reached again and the band entrails into a world wide tour for 2006 playing countries like Japan, and Czech Republic in the summer among many towards the end of the year.