The best public sculptures have to go above and beyond the normal parameters of visual art. They generally lean toward much wider audience appeal, but also have to work well within their specifically assigned space. The two outdoor sculptures currently on view at The Frist successfully meet both those demands, even though they were initially designed for display in New York. Will Ryman’s “Rose on 65th Street” was originally part of a series of 38 that lined Park Avenue in 2011, and Rachel Owens’ “Inveterate Composition for Clare” was first exhibited in Dag Hammarskjöld Plaza. Both artists will be at The Frist tonight to discuss the pieces. Of special note is Owens’ piece, which includes an unusual audio element — whale songs. I’m already imagining a West Side Story-style gang war between this piece and the box that blasts commercial country hits that’s installed on the other side of Demonbreun. Whose side would you be on?