You're here because you have a file that has a file extension ending in .band. Files with the file extension .band can only be launched by certain applications. It's possible that .band files are data files rather than documents or media, which means they're not meant to be viewed at all.

The BAND file extension is a data format associated to GarageBand Software. The BAND files and GarageBand Software were developed by Apple. These files contain MIDI and audio data files made by Apple Loops and software instruments. The BAND file is a complete music project file. The software is an OS X and iOS application for creating music or podcasts and a part of the iLife software or Logic Pro 7. GarageBand smart instruments include keyboard, guitar, drums, bass, sampler instruments and many others. These instruments sound like real instruments. Files in BAND format can be opened with Apple GarageBand '11 in Mac Operating Systems. With the software music input can be done by pre-recorded loops, recording interface or through MIDI keyboard. The latest version offers guitar amps and effects, skill test, basic lessons, groove matching and flex time. These files can be sent through email not by attaching the BAND file directly but through creating an archive and sending it as ZIP file.

Launch a .band file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .band file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .band files aren't yet associated with it. In this case, when you try to open a .band file, you can tell Windows which application is the correct one for that file. From then on, opening a  .band file will open the correct application. Click here to fix .band file association errors

Be careful not to rename the extension on .band files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

A file extension is the set of three or four characters at the end of a filename; in this case, .band. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.