You are downloading the Real Guitar XAP file v18.104.22.168 for Windows Phone. Real Guitar is a free Music App: Real Guitar is one of the most realistic guitar simulator apps featuring a userfriendly interface and an awesome sound quality. All the notes have been. You can now download the offline XAP package file to install & try it.
Download Locations for Real Guitar 22.214.171.124 XAP file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Real Guitar XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.