SHELF LIFE: John Carney outdoes his own previous best with 'Sing Street'

'Shelf Life' is an ongoing series to determine what does and doesn't deserve a place on the shelf as part of film critic Drew McWeeny's permanent physical media collection. We look today at John Carney's uber-charming 'Sing Street,' a look at a group of teenage boys starting a band in Dublin in the 1980s.