Instructions

You can add or remove notes by clicking on the gray rows at the top. Nepbox automatically plays the notes out loud for you. Try it!

Notes go into patterns, and you can edit one pattern at a time. Those numbered boxes at the bottom of the editor are the different patterns you can edit. Click the other boxes to move to a different part of the song, or click the arrows on the currently selected box to swap which pattern is played during that part of the song.

By default, There are four rows of patterns that Nepbox can play simultaneously, and each row has its own set of patterns. The first three rows can play melodies and the bottom row is for drums.

The purple loop underneath the numbered boxes controls which part of the song is currently repeating. Move the loop to listen to a different part of the song, or drag the ends to expand the loop to include the whole song.

When Nepbox has focus (click on its interface above), you can use these keyboard shortcuts:

Spacebar: Pause or Resume
Z: Undo
Y or Shift Z: Redo
C: Copy the current pattern
V: Paste the current pattern
Q: Go to Custom Song Settings
[ ]: Move the playhead backward and forward
S: Solo a channel
Arrow Keys: Change which bar is selected
1-8: Reassign a pattern to the currently selected bar

In the pattern editor, you can click and drag horizontally on a note to adjust its duration. You can also click above or below an existing note to enable a rapid arpeggio/trill effect, oscillating between two or more simultaneous notes.

ADVANCED: Drag vertically from an existing note to bend its pitch, or drag vertically from above or below the note to adjust its volume.

Nepbox has many more features. Enabling Advanced Settings via the Prefernces Menu unlocks much more of Nepbox's features!

Need some inspiration? Check out some of these songs that other people have posted on Twitter!

About

BeepBox is developed by John Nesky, also known as @shaktool. Modded Beepbox is developed by Quirby64, Theepicosity, Fillygroove, and DARE. Nepbox is developed by Neptendo

BeepBox and Modded Beepbox do not claim ownership over songs created with it, so original songs belong to their authors.

Neither John Nesky, BeepBox, the Modded BeepBox Dev Team, nor Neptendo assume responsibility for any copyrighted material played on BeepBox. No songs are ever received, recorded, or distributed by BeepBox Nepbox's servers (nepbox doesn't even have servers). Neptendo is not liable for any problems that may occur when your song gets updated in Nepbox. All song data is contained in the URL after the hash (#) mark, and BeepBox running inside your browser converts that data into sound waves.

You can download and use the source code under the MIT license. In particular, you can use the synth code as demonstrated here to play BeepBox songs in your own Flash or JavaScript projects!