Can anyone identify these birds? (1 Viewer)

Hey guys I have a few audio recordings I did some woodland in somerset a few weeks ago, but being new to identifying different species Im struggling to determine whos who.

Any help is appreciated!

Clip 1, who does this simple song come from I cant find anything like it!
https://soundcloud.com/rob-piller/clip-1?in=rob-piller/sets/birdsong

Clip 2, sounds like there is a dunnock in the foreground about 30 seconds in, whats the simple 2 tone song at the start?
https://soundcloud.com/rob-piller/clip-2-dunnock-foreground?in=rob-piller/sets/birdsong

Clip 3, sounds like a wren in the background, whats in the foreground around 1:25?
https://soundcloud.com/rob-piller/clip-3-wren-in-background?in=rob-piller/sets/birdsong


Correct me if Im wrong about the 2 I have stated as well!

Thanks in advance,
Rob

PS dont mind my voice notes the clips are yet to be edited

1 Great Tit?
2 Great Tit
3 Blackbird

Also what's very likely a Sparrowhawk in the vicinity at about 1:10 in the first recording, not calling but from the multiple alarm calls.

Thanks for the replies guys, have gathered some more opinions on these and have been suggested the following;

1: Blue tit
2: Blue tit background, Robin foreground
3: Mistle thrush

any thoughts? I was thinking great tit for the first 2 as well but listening more im not sure its the right tone

My two cents:

1) Coal Tit is a strong contender, higher pitch points this way, although Great Tit would be my next shout
2) Great Tit
3) Blackbird