You are downloading the Gab Finger Synth XAP file v22.214.171.124 for Windows Phone. Gab Finger Synth is a free and useful Productivity app: Gab Finger Synth is a synthesizer. You only need to move your finger on the screen to change the frequency and the volume of a note. - four ... You can now download the offline XAP file to install & try it.
Download Locations for Gab Finger Synth 126.96.36.199 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 Gab Finger Synth XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.