Wish List

I love Chordify and use it all the time.  It's a great tool.  I wish it had the following tools:

1.  The ability to grab and hold the scroll bar and drag it to other positions in the songs.  If this already exists, I haven't found it.

2.  I would love to be able to change the pitch/key of a song.  It would be great to transpose the key and have the music playback transpose also.