A song recorded over a leased beat should be viewed as an advertisement, an exhibition track. If a person really digs a beat but can't afford the exclusive I would tell them to pass altogether, just end up like these guys, making your best work for something you don't even own.

In the long run the only person who benefits is the producer, they're going to get paid from any amount set in that contract whether 10 people lease that beat or one person or group buys exclusive rights and they can actually sell and do numbers.

I think the best logical situation for a rapper leasing a beat is freestyling/mixtape shit, not something disposable but just good enough to show skill and get buzz so you won't be heartbroken like these fools basing work they intended to sell and market off music they didn't even own.

and depends on that contract too, some are vague, some are really specific, just depends on who they're doing business with and how educated they are on what they're getting into.

exclusive=album
lease=datpiff lol