TOPIC:

I have a live music/entertainment website in the Upper Midwest of the US and I would like to be able to modify JEM so it says 'Band' instead of 'Title'. Is this possible and easy to fix.

Yes, best is, you make a language override.

You're talking to more of a novice then an professional Joomla person. You will need to explain how to get into the language files and do this override.

Sorry. The problem is that there are more language keys which speaks about "Title".
There are 2 possibilities to change the language.
1) go to administrator/components/com_jem/language/en-GB/en-GB.com_jem.ini, search for "Title" and replace it with e.g. "Band". Make the same components/com_jem/language/en-GB/en-GB.com_jem.ini.
The problem will be, if you update the language, you have to redo again.
2) Search the key in the above files, but go to language/overrides and enter the override name for the keys.
(if you have problems search in the help or joomla help for language overrides.