Country singer Gretchen Wilson and comedian Bill Engvall are the latest celebrities to step in as last-minute replacements to headline shows at SeaWorld in the aftermath of documentary Blackfish. Wilson and Engvall will take the stage in Orlando, Florida for the second week of SeaWorld's 2014 Bands, Brews and BBQ concert series, starting next Saturday (08Feb14). Bosses at SeaWorld were forced to scramble to fill in spots left by nine artists, including Willie Nelson, Cheap Trick and Heart, who all cancelled their gigs at the embattled theme park after watching Blackfish, a film which exposed the bleak conditions faced by captured killer whales housed at the location. Wilson and Engvall are following in the footsteps of Kid Rock and Alan Jackson, who kicked off the concert series last week (01Feb14). Other replacement performers for the six-week series are expected to be announced soon.