How Did Barbara Cook Die?

Barbara Cook was an American actress and singer who first came to prominence in the 1950s as the lead in the original Broadway musicals Plain and Fancy (1955), Candide (1956) and The Music Man (1957) among others, winning a Tony Award for the last. She continued performing mostly in theatre until the mid-1970s, when she began a second career as a cabaret and concert singer. She also made numerous recordings.