Sorry I though you want to limit the amount.
Well As far as I can see you submit all the data to a query string. Why??????
You can use this:
<form action="
<?php echo $PHP_SELF; ?>
">
Date: <input name=date type=text size=35 value="
<?php echo $date; ?>
"><br>
Time: <input name=time type=text size=35 value="
<?php echo $time; ?>
><br>
<table ><tr><td>Band</td><td>Song Name</td></tr>
<tr><td><textarea name=bandlist rows=80 cols=30 wrap=virtual tabindex=5>
<?php echo nl2br(stripslashes($bandlist)); ?>
</textarea></td>
<td><textarea name=songlist rows=80 cols=55 wrap=virtual tabindex=5>
<?php echo nl2br(stripslashes($songlist)); ?>
</textarea></td></tr></table>
<input type=submit name=submit>
</form>
Hope this time this will help:p