From Renaissance Spain to 21st century Denmark, On a Ground is a musical journey across time and traditions, centered around one of music's most universal elements: the ground bass. Celebrated recorder virtuosa Michala Petri and renowned Japanese baroque harpist Marie Nishiyama unite to explore the expressive power of this timeless form. Recorded, after a concerttour i Japan, including Suntory Hall, and just before the global lockdown at Chichibu Muse Park in Japan, the album presents intimate and evocative interpretations of works by Diego Ortiz, Alessandro Marcello, J.S. Bach, Erik Satie, and contemporary Danish composer Lars Hannibal, among others. The duo's collaboration reveals the meditative beauty and subtle intricacies of their ancient instruments. From the iconic Greensleeves and baroque gems to lyrical modern compositions, On a Ground is a graceful, immersive listening experience rooted in shared artistry and a deep respect for musical heritage. Recorded December 2019, Chichibu Muse Park, Japan in the DXD format by Hironori Kosaka (OMF).