Duo cut Orrin Hatch song; Pierce tribute due; Reba sitcom gets full season.
'Country Freedom Concert' also will feature George Strait, Alan Jackson, Tim McGraw, Trisha Yearwood.
Duo's lineup includes fire breathers, knife jugglers, clowns.
Hits compilation #1 for third week in a row.
Album is to be promoted with raucous Neon Circus & Wild West Show tour.
LPs from Tom Russell, Ricky Lynn Gregg also hitting stores Tuesday.
Brooks & Dunn release cyber recordings; Wagoner to play Skyline show; Carpenter on 'West 54th.'