"Echoes of the Brain" is a 56-page full colour comic collection/art book of the best of Conversation Hearts comics to date.

It features a collection of narrative comics revolving around SentientCookie's original character, Dylan Qin, a young musician navigating creativity, relationships, and vulnerability.

Echoes of the Brain is available for purchase from Amazon.ca, Amazon.com, as well as the Beguiling comic book store in Toronto. It is also available to borrow from the Toronto Public Library.