You're right: We all rely on inspiration.
My project was inspired by several people (Mahler, but not only), VSL skilled collegues (you, dito) but also by amazing facts which could easily mislead me to behave as a Donald Trump like gorilla if I lost control. But even staying well-mannered I cannot help them being facts:
As far as I can see I'm the first one to create sample based orchestral accompaniments of any Mahler song. And not regarding „Urlicht“ rendered by your friend I still am the only one apparently, not just when considering that I've accomplished all of them meanwhile.
The 4th movements of the 4th and the 3rd symphony are not yet done and the „Lied von der Erde“ has only reached 40 of its 60 minutes, but these items usually are not regarded as part of the lieder cycles.
To cut a long story short:
I'm depending on being inspired and I'm thankful for any source of inspiration, but speaking of Mahler accompaniments I begin to feel like being justified to see myself as also giving inspiration rather than only needing it. Or is this what I've just called Trump like ?
Hope it isn't.
Yours sincerely
PS:
Of course it was a matter of inspiration and perspiration to visit your friend's site. But I could stop sweating learning, that he uses „Farewell“ naming the 9th symphony and not „Abschied“ from („Das Lied von der Erde“).