Celebrated kids’ entertainer recruited a lot of well-known grown-up musicians for the easygoing creation of his new album. Nick Krewen Music, Thu., April 20, 2017 The cat is back — and he’s brought along some cool friends. At 70, beloved children’s entertainer Fred Penner, best known perhaps for his 1979 gem “The Cat Came Back” and his memorable Fred Penner’s Place TV series, has returned with album No. 13, Hear…