MCA’s Tony Brown and Bruce Hinton have signed a four-piece Florida band after hearing just one song on a demo tape. McAlyster, which came together two years ago in Pensacola, includes Josh Walther, Cody Collins, Leigh Usilton and Valerie Gillis. The band came to MCA’s attention through Nashville music publisher Pat Finch. The actual demo recording, a cover of “I Know How the River Feels,” will be released to radio this fall. The tune went to No. 32 on the Billboard country singles chart for Diamond Rio in 1999 and was included on Ty Herndon’s 1997 disc Living in a Moment.