[1] He was president of the Hungarian Jazz Federation (1999–2005) and performed with Anthony Jackson, Randy Brecker, James Moody, David Friedman, Gary Willis, Bob Mintzer, Peter Erskine, Hiram Bullock, Miroslav Vitous, Ilaiyaraaja, Russell Ferrante, and Jimmy Haslip.

After finishing his studies at Béla Bartók Secondary School of Music he performed with prominent jazz bands in Hungary.

[4] Attila László had been appearing as a member & founder of the band "Guitar Trio" with fellow guitarists Gyula Babos and Tibor Tátrai, performing rock and fusion standards as well as original compositions.

In January 2014 the same big band also accompanied Grammy-winning singer Patti Austin, who has previously been singing duos with Michael Jackson, Natalie Cole and George Benson.

"Tell Your Story" - Attila László's "Author's Night" took place at the Budapest Music Center (BMC) with Modern Art Orchestra on 28 February 2016.

Attila László recorded his album "Magic City" together with Budapest Jazz Orchestra big band and the soloists such as Kálmán Oláh, Charlie, Mónika Veres, Béla Lattmann, Péter Kaszás.

The author played the guitar part of the pieces, in addition to the jazz guitar, the jazz trio also played a significant role with the soloist Kálmán Oláh - the flute - oboe - bassoon woodwind section and the string orchestral sound performed by the Budapest Strings.

The "László Attila Fusion Circus" was formed in 2019 and performed for the first time at the Cegléd Drummer and Percussion Gala.