Andy Rowell's blog has a great review of SongSelect "CCLI's SongSelect - Why Every Church Should Get It"

This blog is located the USA so the pricing is in USD but the reasons speak for themselves.

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The SongSelect music player, for hymn sheets and lead sheets, now has a new feature. The SongSelect music player controls now allows the music to be transposed to not only the desired key but also the desired octave. The previous transposition feature of the SongSelect player limited transposition to a half octave above and below the original key, as close as possible to the original key.

Here's the new version of the player controls for the song transposition:

The new enhancement offers a much broader range of transposition. It will be a helpful addition to the options within SongSelect!

Not sure about what SongSelect is? SongSelect is our online service providing access to the lyrics for thousands of the top worship songs, to lead sheets, hymn sheets, chord charts, and sound samples. It has a music player so that you can get a feel for the song, playing the various parts, providing for transposition or changing the song tempo. For more information about SongSelect, including video demos, see the SongSelect web site.