Artificial Intelligence and "Celebrating J.S. Bach": This Google Doodle uses machine learning to harmonize melodies. It was trained on a dataset of 306 Bach chorales, which it analyzed to determine its own rules for part-writing.

Tips: Compositions can be downloaded as a MIDI file. By clicking the refresh button, you can choose to have it re-harmonize your melody. The star button in the lower-left corner allows you to change the key signature, and the amplifier in the lower right corner switches from a Baroque ensemble with violin, harpsichord, and organ to a rock band. You can also change tempo using the up and down arrows. Clicking on the instruments and players at the top of the screen will show you facts about Bach.

Background: This site was created to explore the possibilities of machine learning composing music. It focuses on imitating the style of J.S. Bach. It was designed to help musicians explore ideas and find inspiration.