Berlin studio recordings from the free improvising quartet of Beat Keller on feedbacker electric guitar, Ernesto Rodrigues on violin, Rieko Okuda on piano and Guilherme Rodrigues on cello; four string players invoking the reptilian Mesozoic age through unusual approaches to their instruments, extending the palette of each while creating unexpected percussive elements.

Acoustic free improvisation with an ea-attitude, improvising drummer/percussionist Pedro Oliveira (Bernardo Sassetti) and classical pianist Paulo Mesquita used prepared instruments in a dialog that contrasts solid rhythmically melodic piano progressions with a mix of propulsive percussion, deep resonant tones, environmental timbre, and percussive interventions.