List of attendees

Hi,
for planning performances of our choir we are using the JEM attendee function. Is it possible to include a user-defined field in the list of attendees? The field is (in community builder) called cb_stimme containing "soprano", "alto", "tenor", "bass"
Could I do this by modifying something (?) without destroying everything ?
best regards

If you know the people they can write their voice in the comment, thats the easiest way without changing anything!

Thank you, but I cannot see a comment function.

Settings>User Control>Registration>Allow Comments =Yes

I solved the problem with a simple SQL Statement (SELECT xx_jem_register.*, xx_comprofiler.firstname, lastname, cb_stimme FROM xx_jem_register, xx_comprofiler
where status=1 and event = <eventnumber> and xx_comprofiler.user_id = xx_jem_register.uid order by cb_stimme, firstname;)
Not very elegant but it fulfills its purpose.
Thanks anyway for the hint regarding Comments. We will use this for Comment-purposes