A guitarist of the classic metal/hard rock school Lars was first discovered by Mike Varney (Guitar Player Magazine and Shrapnel Records ) in 1985. After playing and touring with various local hard rock bands Lars recorded and released the 4 track vinyl EP “Can’t Go On Without Your Love” in 1987. Soon after this Lars signed to Black Dragon Records, a French indie label for which he recorded 3 albums Eternity (1988), No Surrender (1989) and the all instrumental Electric Voodoo (1991). Eternity and No Surrender were released in Japan by FEMS , while the instrumental Electric Voodoo was picked up by Leviathan Records in USA and released under the Title “The Exciter”in 1992, and then in 1995 it was released in Asia by SKC.

In 1992 Lars teamed up with Swedish singer Conny Lind who had been in Los Angeles working with Alex Masi and together with Drummer Tony Mattsson and Bass player Michael Ahlskog they formed the band 'Vision' and recorded 1992's album 'Lars Eric Mattsson’s Vision' which went down very well specially in Japan where it was once again released by FEMS and in Europe by Roadrunner. The year after Vision recorded a follow up album, which were never released due to contractual problems and the band eventually split up. Around 1994 when Lars was found playing in cover bands doing blues classics and Hendrix covers Lars got in contact with another Swedish singer Björn Lodin, who had made 4 albums with his own band Baltimoore. As guitarist Nikolo Kotzev left Baltimore Björn joined forces with Lars And recorded 1995’s album 'Astral Groove', which was blues based and quite different from Lars previous releases. More or less Astral Groove came out of jamming ideas but the band split up very soon.

In 1996 Lars wanted to give 'Vision' a second chance and recorded the album 'Till the End of Time' which was his most laid back melodic- almost AOR - release ever. The album got very good reactions and was a living proof that melodic hard rock still had an audience. Singer Randolph Reymers made his debut as lead singer after having sung backing vocals on several albums before Vision. 

As VISION was taking a break from recording Lars went into in studio at the end of August 1997 with a bunch of new songs which definitely showed that hard work pays off. This new album was Lars finest hour thus far in 'Obsession' with his best guitar playing ever as well as some of his better compositions. Add to that singer Björn Lodin who never sounded this good before!  The reviews of 'Obsession' were excellent, Progression magazine of USA called the album 1998’s best Guitar album and it was clear to everyone that Lars had taken a major step forward, but Lars felt it was just the beginning of a new era.

In the autumn of 1999 Lars begun writing for another album and just to make things more interesting Lars invited some friends and well known musicians to guest on the project. These included : Patrick Rondat (Jean Michel Jarre) Rob Johnson (Magnitude 9), Erik Norlander (Lana Lane, Rocket Scientists) Pär Lindh (Pär Lindh Project) Esa Pietilä and more… The new 70+ minute long opus consists of 14 new compositions jam packed with Intense musical ideas influenced by classical music, classic hard rock, heavy metal, progressive rock/metal with lots of virtuoso performances from Lars and his guests. Soft melodic ballads and super tight odd meter riffing – it’s all here!

In the year of 2000 Lars put together a progressive band called 'Condition Red', the debut album features keyboard maestro Derek Sherinian (ex- Alice Cooper/Dream Theater) and Lars’ friend Alex Masi (on additional guitars). Lars next project was to record a new Mattsson album, this time with ex-Balance of Power singer Lance King, and the result, 'Power Games' was released in 2003 and received fantastic reviews all over the world.

In 2003 Condition Red reformed to record and release their second album of progressive rock titled “II”, not too long after this Lars band from the 90-ies made a short comeback in 2004 with a new album “On the Edge”, however Lars major work in 2004 was the new super group 'Book Of Reflections' which include singer Andy Engberg (ex-Lion’s Share/Section A etc…), Vitalij Kuprij etc…but Lars biggest challenge this far was the progressive metal concept album/metal opera 'War' which was released in 2005 and which features: Mark Boals (Yngwie Malmsteen), Vitalij Kuprij, Lance King, Rene Janssen(Ayreon), Benny Jansson (Tears of Anger/Beyond Twilight) etc...

The same year also saw the first instrumental release in 10 years in the guise of the eclectic "Earthbound".  Mattsson found a new vein of creativity and by 2006 had completed "Book Of Reflections II : Unfold The Future" with vocals by Martin LeMar (Tomorrow's Eve) and Björn Jansson (Ride The Sky / Tears Of Anger), with additional guitar from Anand Mahangoe (Sphere Of Souls) and keyboards from Mistheria (solo, Bruce Dickinson, Angel Of Eden). 

2008 saw Mattsson gearing up for the accessible symphonic and prog metal of 'Dream Child'.  Joining Lars was new vocalist, the female powerhouse Adrienn Antal whose soaring voice saw Mattsson step out on a new path with its potent new sound for 2008.

2009 saw the re-release of a newly recorded and remastered version of 'No Surrender + Live' which came with 5 bonus live tracks from the Mattsson archives. The album was warmly greeted by press worldwide.  The rest of the year saw Lars write the follow up to 'Dream Child'.

March 19th 2010 sees the release of 'Tango', the new album released under the Mattsson banner which again sees Adrienn Antal on vocals along with new addition of Status Minor vocalist Markku Kuikka.  Lars spent countless hours putting together the intelligent and highly accomplished music which looks set to take the Mattsson name to a new fan base worldwide.