I found his bio on sound cloud.
Hiroki Sasajima is the sound artist residents in Tokyo. He had started the activity of field recording around 2007. Since then, he goes to record various places in Japan actively and releases many works from labels in all over the world. For his live performances, he places field recording sound and the sound of objects in the space to give a chance to rethink about “how to listen or capture the sound” for audiences. He is interested in the beauty of the detailed and missing sound, and searches for the essence and the possibility of the sound with focussing to the characteristics of time, space and regional cultures. He weaves a seamless fabric of vibration with the pure innate vision of sound.
It was Jez Riley French who recommended I listen to his work for my own reference.
I found this on Youtube called Transfer. A piece released in 2013.
I found this project to be in line with my own interest in how contact mics bring out different soundscapes or perspectives within recordings, perhaps a closer more intimate feel.
I also found this performance of his, where he uses found objects and field recordings, with another artist who is using an instrument.