I saw Bierko perform numbers from the show on various TV programs and bought the revival cast recording -- he usually did "Trouble" or "76 Trombones" on TV. He imitated Preston on every single number on the album (and gets excoriated for doing so by the TheaterMania critic). That was enough for me to decide I hated what he was doing. I finally saw The Music Man revival on stage in the fall of 2001 and loved everything about it.