In March 2017, during the Reviving Water Tour, Ukrainian guitarist Estas Tonne—master of acoustic improvisations blending flamenco with percussive illusions on classical guitar—rendered "Inner Worlds" at Amsterdam's Royal Theatre Carré, a 1887-opened hall emblematic of Belgian Art Nouveau and a bastion of European shows since 1913. This 25-minute piece, with its layered finger techniques, transmuted the 1,300-seat venue into a meditation portal, where tones resonated off velvet balconies, evoking an inner journey for listeners. Later released as part of the album Perception, the recording cemented Tonne as a performer where the instrument serves as a conduit to self-discovery.