Question: How many decades has the career spanned of the musician who was commissioned to write music for NBC's national news programs
Sentence (from "News and Views (TV series)"): Broadcast on ABC from 1948 to 1951, it was ABC's first evening news program and one of the first such programs on any television network; Both CBS and NBC also initiated their evening news programs (respectively "CBS Television News" and "Camel News Caravan", called "Camel Newsreel Theatre" at first) that same year, both debuting a few months before the first broadcast of "News and Views" on August 11, 1948.
Relevant evidence: No