[3] In 2015, under the direction of Peter Vrábel, they performed Wajsar's Lime sinfonietta, an audio-visual collaboration with filmmakers Marek Bures and Michael Gahut, at the Prague Spring International Music Festival.

[7] Wajsar wrote "8 Movements for a Fan", a melodrama for seven instruments, with recitation "inspired by a collection of poems in French by Paul Claudel, reminiscent of Japanese haiku", according to Jan Borek.

[9] In 2021, writing for Wax and Wire, Julianne Kirk Doyle reviewed Birdie Pranks, Wajsar's collaboration with Karel Dohnal, who also performed the piece on the album Czech Music for Clarinet.

Writing for Bachtrack, Frank Kuznik said wrote that Wajsar's music "rumbles, bangs and explodes off the stage [...] combining classical elements with contemporary sonics and beats.

"[11] Kuznik had previously called Wajsar "one of the most versatile young composers in the Czech Republic" when reviewing Tramvestie, a soundtrack to a book of poems by Pavel Novotný.