Um ... sounds awesome.
Even cooler, the tunes by Jefferson Airplane, Joe Cocker, Jimi Hendrix, Janis Joplin, The Band and more will be backed by a full orchestra.
Bring a blanket, your favorite six pack of beer (or soda) and wear something to noodle in.
Definition of noodling according to Urban Dictionary - "The constant movement and flailing of limbs and head attributed to [...]. Often characterized by sudden movements, such as jerking one's arms out from the body as if trying to pull up long sleeves off your arms, although you are undoubtedly shirtless."