The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
Barbershop Tags provides access to over 4000 tags of songs performed in the Barbershop Style. This application allows you to view the notes of the tags, hear learning tapes that have been created, or see videos of others performing the tags. This app is provided in conjunction with http://www.barbershoptags.com where you can go to upload your own tags.