Neil expresses himself through music instead of other means

[NotInvisible]

You can add "In Denial"

Are we pretending he was writing about his time as a gay father or his time as the daughter of a gay father?

[Andie]

Also The Way It Used To Be.

[Morse]

These are all songs that Neil has said were inspired by his personal life:

It always comes as a surprise
Bet she’s not your girlfriend
Was it worth it?
Left to my own devices
I don’t know what you want but I can’t give it any more
You only tell me you love me when you’re drunk
Footsteps
Love is a catastrophe
Home and dry
E-mail
You choose
Liberation
Love comes quickly
Discoteca
The survivors
One and one make five
Hit and miss
Betrayed
The ghost of myself
Leaving
Breathing space
Being boring
New London boy
For all of us

You can certainly include It Couldn't Happen Here and Your Funny Uncle in there as overlapping subject matter (awful choice of words there, and I apologise) as Being Boring.

All three are about the same emotional territory around Neil's friend Christopher/Chris Dowell's illness and death, albeit from different angles.

[Sandy Shaw]

You can add "In Denial"

Are we pretending he was writing about his time as a gay father or his time as the daughter of a gay father?

No, but after the fact didn't Kylie say she thought of Neil as her gay Dad!?