With Manic Street Preachers, he was involved in production for numerous gold and platinum accredited albums.
Haver's first notable engineering and writing work, came on the fifth Manic Street Preachers album, released in 1998.
[2] He teamed up with The Simpsons creator, Matt Groening in 1992 to create a second musical album for the animated series.
[7] Haver worked on a number of the album's tracks, including Freedom of Speech Won't Feed My Children and Royal Correspondent.
The album was titled Highlights in Slow Motion and received positive reviews, albeit struggling to reach the top of the charts in terms of sales.
The album was a big success, securing two number one singles in the country with the hits Larger Than Life and The Fear, from Playground Battle.
Haver toured with the Manic Street Preachers in 2003 as a percussionist, following the release of their greatest hits album, Forever Delayed.
During the same period, he also helped launch the career of Amy Wadge, now known as a regularly co-writer of Ed Sheeran's music.
In 2002, Haver heard Wadge playing in Cardiff and recorded and released her debut album, The Famous Hour.
[10] Beautiful Intentions was released in 2005 by the ex-Spice Girl, Melanie C. Haver was the main producer for the album.
Despite the limited success in the UK, the album performed well in mainland Europe, securing Melanie C a number of accolades.
[11] In 2006, Haver teamed up with Manic Street Preacher frontman, James Dean Bradfield for his debut solo album.
[13] Haver co-produced the eighth studio album for the Manic Street Preachers, it was titled Send Away the Tigers.
The album received nationwide coverage in the UK, as it only missed out on the top spot in the charts by 690 copies, losing out to the Arctic Monkeys.
[17] His recent releases also include the Red album for Devilskin, Horizon for Ekko Park, The Blessed Ghost for Voodoo Bloo and has become a member of the band Gramsci.