Yes it can be simple. I think you should have a more complicated one and a simplified one. The more complicated one makes you look like you know what you're doing and makes it known you are no simple guy to mess with. The simplified version will make you seem like a more caring, honest guy who is willing to help the artist understand something.
Contracts are usually summarized/simplified like this:
- # of commercial use allowed
- How much copies can be distributed.
- Who owns the beat. (If it's a lease, the producer owns the beat. if it's an exclusive usually the artist owns the beat, but it depends on what you want)