  Virasoro irregular conformal block is presented as the expectation value of
Jack-polynomials of the beta-deformed Penner-type matrix model and is compared
with the inner product of Gaiotto states with arbitrary rank. It is confirmed
that there are non-trivial modifications of the Gaiotto states due to the
normalization of the states. The relation between the two is explicitly checked
for rank 2 irregular conformal block.
