La Scala has canceled a planned tour of the UK after being unable to secure the services of conductor Mstislav Rostropovich. The tour was originally to have been led by Riccardo Muti, who resigned as La Scala’s musical director last month, leaving Milan’s famed opera house scrambling to find replacements. However, there is evidence that the labor strife which has engulfed La Scala for much of the last year may be ebbing, as union leaders rescinded their call for an ongoing series of opening-night strikes.