"Mask" is more rock-influenced than Dream's previous song, "Roadtrip", and lyrically details his past and present struggles with attention deficit hyperactivity disorder (ADHD).

The song's accompanying animated music video, released in June 2021, was negatively received by viewers for its quality and messages, and became an internet meme.

[citation needed] It was released to streaming services, and onto the "Dream Music" YouTube channel as a lyric video.

[5] Dream has said that "Mask" is a much more personal song than "Roadtrip": "I would say, the main reason I've been enjoying music is being able to tell stories and talk about things from my life and stuff in a catchy way.

[11] The official lyric video for "Mask", released on Dream Music, has over 33.1 million views on YouTube as of December 15, 2022.

The music video for "Mask" was directed by Phyre Studios, a group of 18 teenage animators, and released on June 8, 2021.

[3][12] In the Pixar-inspired CGI video, Dream is seen walking through his school, talking to his dad, playing games with his friends and throwing away his "normal pills".

The time constraints meant that models for other characters, such as Dream's dad and other Minecraft YouTubers were scrapped, and many technical errors and mistakes were left in the animation.

[3] Upon release, the music video received negative reactions from viewers, many of whom commented on the poor quality of the designs and its technical mistakes.

Dream later clarified in an interview with Anthony Padilla that the scene was based on his real experiences, and how he was dismissive of medication for his ADHD.