Koen Holtkamp presents Gong Solo on Cassauna. Holtkamp on the release: "These pieces are the first part of a series devoted to exploring the gong, so I decided to begin with a very simple approach. Mallet is literally the first recording I made with the gong on the day I acquired it, so it represents my initial reaction to the instrument. It's the same basic tempo struck with a single mallet but varying intensity and position of the mallet on the gong to get a wider range of dynamics and sound. Sine uses a single low frequency sine wave, tuned to a resonant frequency of the gong. Other than fading out the sine wave coming from the speaker behind the gong at the very end, I didn't make any changes during the recording, so the minute fluctuations that happen during the piece are purely from the gong interacting with the bass tone." Mallet was recorded in 2015 and Sine was recorded in 2016.
Read this beautiful review at The Hum.