You can find and download Various nightcore versions of (originally by Halsey and often remixed featuring Nico Collins ) through several platforms:

: Features multiple extended and switching-vocal remixes by creators like REMIX QUEEN and 『Kiyosl』 .

: Offers a version by neko ft. Tazzy for direct MP3 download.

While "detailed paper" is not a standard industry term for a music format, in the context of nightcore communities and digital downloads, it often refers to a or a PDF metadata file included with high-quality MP3 packages. These documents typically provide a breakdown of the song's narrative, character perspectives, and technical remix details. Listening and Download Options

Walls Could Talk [Extended] (Nico Collins Remix) - SoundCloud

: High-quality nightcore uploads often include full lyrics and "detailed paper" descriptions of the song's meaning in the video info section. Understanding the "Walls Could Talk" Narrative

The song describes a volatile, high-stakes relationship characterized by intense secrecy and private conflict.