Absolutely not! I can assure you that if you work hard, you will get to that level one day. I know that a girl started ballet(which is really hard) at 15 and at age 17 she danced in a famous theatre... Everyone in the class was 3 years younger than her but she kept working hard. Also, I'm a 15 yo dancer and if I saw a new 15 yo dancer in my class, i would think that that's perfectly okay
Anni Mosci: The second one at 2:07 is Russian song "Серенада" (оr "Serenad") performed by Russian band "Звери" (means animals). If you know some Russian people they will help you to find that song. It is very easy. All the best!
Looks great - we're releasing music for technique class (aimed at Cunningham/Graham based techniques) that may be of interest to you. So far there's 175 instrumental tracks all arranged by count and tempo.