Google’s Blob Opera lets you conduct a quartet of singing blobs for instant festive joy Created by artist David Li, the interactive instrument features four animated blobby characters which you can control to warble at different pitches and vowels and create your own music. Words Share Whatever you’re doing right now, it can wait – because Blob Opera is probably the most fun you’ll have today. A new machine learning experiment by David Li for Google Arts & Culture, the online interactive instrument features four animated blob characters which you can conduct to create your own music. They were trained on the voices of four real opera singers, a tenor, bass, mezzo-soprano and soprano, and by dragging and stretching them you can control the pitch and vowel they sing. As you play around with their voices, they harmonise with each other creating a mesmerising performance, which you can record and send to a loved one. Or you can switch to Christmas mode, and watch the blobs sing festive songs while wearing Santa hats – who needs carol singers!