Welcome to this week’s Release Round-Up! John Williams and The Boston Pops, The Complete Philips Recordings (Decca) (Amazon U.S. / Amazon U.K. / Amazon Canada) Decca will celebrate John Williams’ 90th by turning the clock back to 1980 when the famed composer-conductor took the baton from the legendary Arthur Fiedler to lead The Boston Pops Orchestra into a new era.  John Williams and The Boston Pops: The Complete Philips Recordings boasts 21 CDs and 22 albums originally released on Philips between 1980 and 1990, at which point the Pops switched affiliations to Sony Classical.  (The Sony Classical era…