So just started her up to go out for the day selected some music to listen to then I realised there was a funny noise from the engine... popped the bonnet and all I can say it sounds like something resonating... any ideas?

 Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

Bump? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

You will have to learn to turn the radio on before starting the engine
Can’t really hear anything , has it gone away ?

It might be my dainty ears lol but I can hear it on the video it’s like a woo woo sound... it’s running quite nicely though so radio it is unless anyone can think of something else Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

Is the interior fan on , vacuum or intake leak?

You are going to drive yourself nuts listening to engine noises with the M62

Was reading that a bad pcv system makes funny sounds could be this...? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

Potentially i suppose, have you tested your dipstick tube for a slight vacuum with a latex glove or cling film - don't let go of it !

you are not imagining the sound, I can hear it too

no idea what it is tho. it doesn't sound metallic. Is it definitely engine area or does it get louder if you listen under the car.... There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
KIA E-Niro 4+
2021 Discovery 5 D300 MHEV commercial

well the problem is it comes and goes not heard for over a week now... it'll be back though... Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

it sounds a bit like blowing across the top of a milk bottle, have you seen your milkman lately ?

no strangely not... but it does sound like that and sometimes when driving - can a vc leak make that sound? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF