  Asteroseismology has been proven to be a successful tool to unravel details
of the internal structure for different types of stars in various stages of
their main sequence and post-main sequence evolution. Recently, we found a
relation between the detected pulsation properties in a sample of 34 pre-main
sequence (pre-MS) delta Scuti stars and the relative phase in their pre-MS
evolution. With this we are able to demonstrate that asteroseismology is
similarly powerful if applied to stars in the earliest stages of evolution
before the onset of hydrogen core burning.
