A voice coach has some tips on preparing your body and mind.
Nashville vocal coach Janet Kenyon trained Melinda Doolittle before and during her time on Idol, and has worked with superstars like Lady A and Taylor Swift.
Kenyon has been helping students perfect their pitch for nearly 20 years.
Over the years, she's had many students audition for American Idol.
Some made it to Hollywood, others to the top 3, like Middle Tennessee's own Melinda Doolittle.
Kenyon says, "Idol is a great platform if you are one of the ones that thousands that makes the show. It can be a great platform to get your name out there and start your career."
Kenyon has a lot of students auditioning here in Nashville on Saturday.
She has several key pieces of advice to make sure you are prepared.
Number one, don't worry about what the judges are looking for.
Find your niche and and stick to it.
She says, "For some people, they are great at singing big notes but that not your thing and you go do it that isn't your benefit. You need to figure out what is different unique and special about you and go in there and do that with song choice, the way you dress, everything, it needs to all work together."
Performance wise, Kenyon says the most important things you can do is sleep and hydrate.
She says, "You've got to keep fluids going not just before you sing because the most important time is the 24 hours leading up to it."
Also remember that these 20 second auditions are more of a mind game than anything else.
She says, "Don't get caught up in watching and analyzing auditions cause that can really mess with your head."
To keep your head in the game, Kenyon suggests bringing headphones to distract you from others auditioning.
She says it's also important to get up and do quiet vocal exercises and keep your vocal chords warm.