This week at theme parks: Kelly Clarkson, Trace Adkins, Bret Michaels
You'd best have a song in your heart this week at Central Florida's theme parks. In-park concerts and other events are in full swing, building up to a blockbuster weekend. Let's tackle it chronologically:

+ Carl Dixon, formerly of the Guess Who, performs a Velvet Unplugged concert at Universal's Hard Rock Hotel at 8 p.m., Tuesday. It's free if you want to stand, but cafe-style tables are available for $30 (seats two) or $50 (for four). For more info or to make table reservations, call 407-503-2402.

+ The Osmond Brothers perform as part of the Real Music Concert Series at Busch Gardens in Tampa, Wednesday through Saturday. Show times are 11:30 a.m., 1 p.m. and 3:30 p.m. each day. More info: www.buschgardens.com/bgt.

+ It's a doubleheader weekend for Mardi Gras events at Universal Studios. Fresh off the Super Bowl and the Grammys will be Kelly Clarkson on Saturday, followed by Boyz II Men on Sunday. The parade steps off at 7:30 p.m. followed by the concerts at 8:30 p.m. More info: www.universalorlando.com/mardigras.

+ SeaWorld Orlando's Bands Brew & BBQ fest also goes back-to-back with Trace Adkins on Saturday and Kenny Rogers on Sunday. Show time is 4 p.m. both days. More info: www.seaworldorlando.com.

+ Silver Springs, the longtime attraction near Ocala, hosts two country acts on Saturday. James Otto takes the stage at 1 p.m., followed by Lee Brice at 3 p.m. More info: www.silversprings.com

+ On Sunday, the Busch Gardens version of Bands, Brew & BBQ features Bret Michaels. Show time is 5 p.m. More info: www.buschgardens.com/bgt.

+ There ARE a couple of non-musical options. On Saturday, the Orlando Science Center holds stargazing from 5 p.m. to 9 p.m. at its observatory plus two editions of a planetarium show "Orlando by Night" in the CineDome. Cost is $10 per person. For more info, go to www.osc.org.

+ On Sunday, the Orange County Regional History Center will hold two screenings of the rare 1975 film "Roberto Clemente: A Touch of Royalty" followed by discussions with producer-director Don Fedynak. Show times are 1 p.m. and 3 p.m. for the 30-minute film (narrated by Jose Ferrar), and they are included in regular history-center admission -- $9 general, $6 for ages 5-12. The screening are in conjunction with the current exhibit: "Beyond Baseball: The Life of Roberto Clemente." For more info: www.thehistorycenter.org.