You are downloading the Bass Scales XAP file v18.104.22.168 for Windows Phone. Bass Scales is a free and useful Music app: Bass Scales is a simple reference Windows Phone app for bass guitar players.It displays scales on the fretboard (24 frets) with four, five or six ... You can now download the offline XAP file to install & try it.
Download Locations for Bass Scales 22.214.171.124 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Bass Scales XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.