[6] Siddharta’s debut album, Id, was recorded at Studio Tivoli with Dejan Radičevič and Anders Kallmark from April 1998 to February 1999.

For the recording of the album, Siddharta invited a bass player, Jani Hace, who later joined the band as an official member.

In November 2001, Siddharta filled the Kodeljevo sports hall in Ljubljana, making it their largest sold-out concert to date.

The band concluded their Nord tour with a significant performance in Cankar Hall, supported by the RTV Slovenia Symphony Orchestra on 16 June 2002.

At the end of October 2002, Siddharta recorded a commercial for Slovene mobile provider Mobitel, which aired on MTV Europe.

For the commercial Siddharta's remake of Vlado Kreslin's song Od Višine Se Zvrti was used.

The band started their studio work in December 2002 and in July 2003, Siddharta and Multimedia Records, with whom they had released all of their previous albums, agreed to discontinue their cooperation.

[10] On 13 September 2003, Siddharta, accompanied by the RTV Slovenia Symphony Orchestra and 60 dancers, played before a crowd of over 30,000 people.

Playing two to three times a week, the Rh- tour visited all parts of the country, took a detour to Austria for a day, and ended just after Christmas in a sold-out concert.

Siddharta's special-edition CD bloodbag package has been entered to the Cresta (the world's most prestigious designer and advertising awards program) short-list of finalists.

The English version of Rh-, which had already been released as the bloodbag limited edition in 2003, was remade and re-released internationally in spring 2005.

The DVD included Siddharta's videos Rave, Insane and My Dice, making-of documentaries, live videos recorded at their stadium concerts, band photos and an exclusive interview, in which the band presented their own view of their music of the past, present and future, the music scene in the band's home country, Slovenia, their music influences, their fan base, their past albums and plans for the future.

The band performed at large national music festivals such as Rock Otočec and Piše se leto in 2005.

In 2005, Siddharta performed for the first time before an international audience at the Exit festival in Novi Sad, Serbia.

It was at this Viktor awards show that Siddharta and Dan D premiered in performing "Male Roke / Voda".

Siddharta's cooperation with Dan D was marked by the release of the Male Roke EP, which included the aforementioned duet, the original title song and four live numbers.

The CD contained the performed songs only, while the DVD featured the whole show recorded live on camera.

Siddharta's first bass player Primož Majerič, Big Foot Mama's singer Grega Skočir, rapper Nikolovski, legend of Slovenian rock music Vlado Kreslin and string quartet Godalika joined them on stage.

Cene Resnik, after over ten years as a member of Siddharta, left the band to pursue a solo artist career.

Ross Robinson produced the new album, Saga, which was released on 21 November 2009 with a promotional concert in Kino Šiška.

In 2013, the band released a double CD and DVD live album of their performance on June 17 and 18, 2013 in Cankarjev dom with the RTV Slovenia Symphony Orchestra.