Not much seems known about Yesca, other than that three of their songs are present on Cheech & Chong's "Up In Smoke" soundtrack. All 3 songs were produced by Danny Kortchmar & Waddy Wachtel.

It is quite likely that Yesca is Cheech Marin & Tommy Chong. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.