Tocando Fondo is the result of a year’s deep collaboration between Vienna-based electronics artist Klaus Filip and Argentinian trumpeter Leonel Kaplan, recorded in Buenos Aires in 2014. The album gathers two extended improvisations, both unfolding at the intersection of air, sinewaves, and architectural space. Filip’s contribution is a world of tuned sinewaves - clear, oscillating, sometimes trembling at the edge of instability - while Kaplan’s trumpet weaves arcs of breath, attack, and fragile pulse with a level of precision that makes everymicro-change matter.

Rather than pursue drama, the music insists on process and tension: the duo explores how smallest variations in pitch, timbre, and electronic shimmer disrupt and animate the field. Each improvisation is built from a surfeit of nearly static energy. Sonic structures form and dissolve, acoustic and electronic sounds commingle until listeners cannot tell one from the other. In quieter passages, sine tones pulse against bell-like harmonics and air sound; moments of denser texture are shaped by sudden swells, unstable drones, or lingering edge tones.

Filip and Kaplan’s dialogue is relentless, yielding both radiant stasis and disturbance. The album’spacing is unhurried - notes hang suspended, time expands - and yet critical mass is achieved vialayered vibrations and delicate feedback. Tocando Fondo invites the listener to attend not just to “notes” but to the emergent grain of color, contour, and collective intent. It stands as a canonical example of duo improvisation for trumpet and electronics - two musicians working at the limits of gesture and resonance, shaping an experience as tactile as it is ephemeral.