Hi Narayano,

Welcome to the forum.

The '1a' that you're referring to is not a chord. It's bar number 1 and it's set to an 'a' substyle.

If you go to the link below, you'll find some video clips that will help you understand how BIAB works. The very first one in the 'Beginners' section explains how to enter chords. While it's an older version of the program, and BIAB looks a little different now, the principle is exactly the same today.

http://www.pgmusic.com/videos.bbwin.htm

Regards,
Noel




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