yet more singing

Hello, more unknown singing I'm afraid - 2 video clips :

* the first is longer and has many repeats of the phrase (which I can't identify)
* the second is much shorter but closer so a slightly better view

At first glance it looks perhaps like a Dunnock but doesn't sound like one, and seems the wrong habitat and behaviour ? (didn't have my binos with me unfortunately)

Any ideas much appreciated
Thanks
Jon

https://youtu.be/No2eWSYRcrs

https://youtu.be/BdggUMraMBQ