should i lie about my age to make it in the music industry?

I don't know what's more disturbing - your fantasies about sex with children, you pretending you have an underage wife, your sexual comments about animals or your theory that you can sign a contract in which you lie about your age.  Your total lack of understanding about "labels" and "managers" is actually humorous.

Call me when you drop your first album.  I'll be waiting.

not worth it you will get found out and scrapped for that reason rather than your talent

These days it's best to be honest as it's easier to have outside influences catch you out.

These days it is also possible to cut out the middleman thanks to social media + digital download music platforms such as iTunes and Amazon Music to self-publish materials...

https://www.youtube.com/watch?v=64PAdpdsBYU

https://www.youtube.com/watch?v=v7oWQ3jm_h0

https://www.youtube.com/watch?v=Fl662kUChIk

What does this have to do with travel?

Lie and say you are 19

You can't lie about your age any more. It's all over the internet. 

'the only way they could find out i’m older is if they ask people that know me'

...or if they require your ID to set up contracts, payments etc.

You can try it but it wont get you anywhere, as they will very soon find out your real age. And you will never become a super star either. You would be lucky to get a gig in a pub.

If you want to get in the music industry, you'll have to sign a contract, lying about your age would be a likely breach of that contract, and that would be the nd of your music career.

Yeah people are going to hire you and not ask your date of birth. Of course.