door of which car/which car's door

[jutfrank]

I would say that the is wrong there and that it should be my because the speaker is saying something about his own personal relationship with music.

My love of this music helped me survive.
This is the music my love of which helped me survive.

 

[Glizdka]

I would say that the is wrong there and that it should be my because the speaker is saying something about his own personal relationship with music.

My love of this music helped me survive.
This is the music my love of which helped me survive.

I like my better than the.

Would her make sense, though?

In a hypothetical situation where, a long time ago, I was so depressed that I started having suicidal thoughts. She would play and sing songs, and divert my attention to something positive to cheer me up. It was her love of music which helped me survive this difficult period of my life.

 

[jutfrank]

Would her make sense, though? In a hypothetical situation where ...

If that's the meaning, then absolutlely, yes.

 

[Annabel Lee]

I would say that the is wrong there and that it should be my because the speaker is saying something about his own personal relationship with music.

My love of this music helped me survive.
This is the music my love of which helped me survive.

I believe I indicated that I preferred "my" to "the" there. Nevertheless, I thought it worthwhile to add "the" as a viable possibility because it is obviously implied that "the love" is "my love" there; interpreting it as referring to others' love would be a bit barbaric. Moreover, it is possible to add further phrases to the "the" version to clarify its personal application:

This is the music the love of which, having been there for me all my life, helped me to survive.​

 

[jutfrank]

it is obviously implied that "the love" is "my love" there

Yes, that would be the best interpretation.

Still, why say the when you can say my and leave no room for misinterpretation?

 

[Annabel Lee]

Still, why say the when you can say my and leave no room for misinterpretation?

I personally just find it a bit odd-sounding to use a possessive determiner in relative clauses beginning "[determiner] NP of which." In my reading, speaking, and listening experience, those almost always begin with "the." Consider the following:

a) This was the point Sally's knowledge of which enabled her to answer the question.​

b) This was the point her knowledge of which enabled her to answer the question.​

c) This was the point the knowledge of which enabled Sally to answer the question.​

Do you prefer (a) or (b) to (c) in that case? I don't think "knowledge of which" is greatly removed, grammatically speaking, from "love of which." I myself think (c) sounds the best.

 

[jutfrank]

There's also a fourth to consider, which uses a cataphoric 'her':

d) This was the point her knowledge of which enabled Sally to answer the question.

I think any preference a writer would have would come from the context as well as their style.