Blob Opera is an AI experiment by David Li in collaboration with Google Arts and Culture. According to the website, it pays tribute to and explores the original musical instrument, namely the voice. “We developed a machine learning model trained on the voices of four opera singers in order to create an engaging experiment for everyone, regardless of musical skills. Tenor, Christian Joel, bass Frederick Tong, mezzo‑soprano Joanna Gamble and soprano Olivia Doutney recorded 16 hours of singing. In the experiment you don’t hear their voices, but the machine learning model’s understanding of what opera singing sounds like, based on what it learnt from them.” (Blop Opera) You can drag the blobs up and down to change pitch – or forwards and backwards for different vowel sounds. It is not only pleasurable to hear the blobs, but also to see them. While singing, they look around and open and close their mouths. Even their tongues can be seen again and again.