Renowned percussionist Nikos Touliatos presents an improvisational music performance, “Sound Effects,” on April 11 at the Theater of the No (3 Konstantinou Paleologou). Joined by pianist Andreas Symvoulopoulos and vocalist Chrysiida, Touliatos invites the audience on a journey that bridges tradition and contemporary soundscapes, blending rhythm, melody, and spontaneous composition. Tickets cost 10 euros at more.com.