Piano is a free add-on tool for the Chrome browser developed by chaser11. This program allows users to play a virtual piano using their computer's keyboard or by clicking on the keys. With multiple octaves available, users can easily change the octave using the arrow keys. Additionally, the sustain feature can be toggled on and off by using the shift key.

Piano offers a straightforward and intuitive interface, making it easy for users to start playing without any prior knowledge of music. Whether you're a beginner or an experienced musician, this add-on tool provides a convenient way to practice and experiment with different melodies and chords. The program is compatible with the Chrome browser, ensuring accessibility for a wide range of users. With its simplicity and versatility, Piano is a great choice for anyone looking to have fun and explore their musical creativity.