How to identify song of Garden Warbler v's Blackcap

This is my first video to help people hear the differences between Black and Garden Warbler. They are not hard to tell most of the time, you just need to focus on pitch and listen out for the 'pitchy' notes of Blackcap at the end of each burst as - I describe in the video.
Stay with me as the Garden Warbler does give itself up in the end.

[@Brian.001]

Thanks for this. What do you mean by a 'pitchy note'? Thanks.