Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Surround sound a MUST!!

Brilliant when watched with widescreen tv and surround sound.Great detail, from German navy personnel singing 'It's a long way to Tipperary' to the problems with LICE, eeek.The sound of the Depth charges with a woofer is sweeeet.Characters in film are great and the views achieved in U-boat is awesome and realistic.Flawless.