These are guitarist Marc Sambola and actrice/singer Mariona Castillo. They work together on a regular base. Sota el Pit is a song from their second show, called Nus. More songs can be found at Bandcamp.
Otto Vowinkel is a household name in the classical guitar world; a renowned luthier with customers all over the world.
His instruments are physically light, easy to play, ultra-responsive and very powerful. His guitars have outstanding tonal qualities, evenness in sound colour and a perfect intonation.
Otto blogs about making guitars, guitarists who play his instruments, festivals he visits and ‘his’ guitar series Meesters op de Gitaar. He also writes about guitar maintenance.