There's a moment, early in Two Lonely Space Pilots, when time seems to stop. Not pause - stop. The saxophone sustains a note that hovers somewhere between breath and pure tone, while scattered percussion marks territory in the emptiness like footprints on an unexplored planet. This isn't background music. This is Hekura - a Barcelona-based duo who've spent years learning how to make silence speak and stillness move. Ernest Pipó and Edu Pons met during their jazz studies at Taller de Músics in Ba…