Polly- why it works

The previous Hurtwood opening title sequence called ‘Polly’ worked in my opinion really well. In the sequence a approximately 17-21 year old woman plays outside in the garden and then goes inside where she sits down at a table but her presumed family has been brutally murdered, she treats them like puppets. The nondiegetic soundtrack, a cover of happy birthday in a slower tempo, instantly sets the mood and hints that something is wrong even as the viewer just sees her playing outside.  There are multiple close ups of a table filled with birthday cakes at the start. A shot then reveals Polly playing outside she is alone and isolated a typical theme in horror movies which is highlighted as the shot is filmed at a wide angel proving her isolation as nobody else can be seen. The slow pasted sequence consists of simple cuts thereby not distracting form Polly. I believe the scenes simplicity allows it to flourish as the viewer does not really have to concentrate and therefore is likely to read the titles. A creepy and unsettled feeling is being created form the start and the lack of information presented to the viewer creates interest.