“Nowadays my compositions are more sound-oriented and I think more acoustically, rather than tonally. Sometimes I see my works more as sound art rather than music. The sound itself somehow becomes a priority.”
“His music sometimes reminds me of Iannis Xenakis. He creates soundscapes and has a great interest in the specific colors of the various instruments. There are also great contrasts between baldness and musical bustle. I experience his piece as a journey through a landscape.”
- Arnold Marinissen, Cultureelpers
“...a soft acoustic sound-study of metal and wood, with pauses, that sharpen the listening attention to the utmost.”
"It was actually the piece by Gísli that I enjoyed most... the development was really enjoyable... and a fun interplay between the violin, the harp and the percussion. Very beautiful! Enjoyable piece!"
„Það var reyndar verkið eftir hann Gísla sem stóð upp úr, fyrir mér allavega... Það var mjög skemmtileg uppbygging í því... og svona skemmtilegur leikur milli fiðlunnar, hörpunnar og slagverksins. Mjög fallegt! Skemmtilegt verk!“
- Sólrún Sumarliðadóttir, Víðsjá (RÚV)