Through their dedication to discovering new sounds and repertoire for percussion chamber ensembles, arx duo’s Garrett Arney and Mari Yoshinaga have commissioned nearly 100 works from a diverse array of composers from around the world. Inspired by the numinous interweaving of sound and timbre between marimba and vibraphone in Peter Klatzow’s “Ambient Resonances,” they commissioned works from Juri Seo and Robert Honstein to further explore that dynamic. Here on their debut recording they highlight the sustain of the vibraphone with the low resonant tones of the rolled marimba, at times filling space with moving harmonies and dense melodies, and others, remaining still and contemplative.