Where Was I

[curlytops67]

I have answered this week's Where Was I, but have no idea about this:
'A big house that was - in a manner of speaking - the birthplace of some of Britain’s finest late-20th-century tunes. But as we explored the area, birth became the last thing on my mind'.
I like to unravel each part of the passage in order......however this I did not know.
Please help!

[Buenchico]

Which bit don't you understand?

https://en.wikipedia.org/wiki/The_Manor_Studio

https://en.wikipedia.org/wiki/Shipton-on-Cherwell_train_crash

[curlytops67]

Buenchico, thanks for the answer 'The Manor Studio'

[bobbinwales]

In a 'manner' of speaking was another clue.