Piano Prime is a fun, and very simple piano addon for your Opera browser.

This Addon is a lite and very easy to use Addon for playing and learning Piano. You can play your favorite song with the built-in keyboard, or the mouse. There is also an option to record desired song(s) and replay it at any time. In total, there are 52 keyboard keys but only 27 of them are visible when you install the addon for the first time. This number can be changed from the options page. A setting is available to hide the built-in keyboard (top section). Moreover, sustain-control option makes piano bits to last a bit longer (for a more professional playing). Overall, this addon is a user-friendly and very lite browser extension available for Opera.

Some Important Features
1. All the settings are auto saved to the memory.
2. You can play piano with the keyboard, mouse, or the built-in keyboard at the top.
3. Number of visible keys are adjustable to your desired choice (default is 27).
4. You can hide the keyboard from the options page.
5. There is also a sustain-control key to match songs to your need (default is off).
6. You can record or replay any song(s) from the sidebar settings panel.

Note: in order to report Bugs, please fill the bug report form at the addon's Homepage (http://mybrowseraddon.com/piano.html).