Intermedian and advance singers?

After you go through all the beginning lesson, is there any intermediate and/or advance lesson plans?

While we don't have an "advanced" 30 day course, the level 2 beginner course may feel "intermediate"! We have dozens of shorter courses (3-5 lessons) and a handful of 14-day courses (vibrato, pop, and performance come to mind) that are great for intermediate singers.