The phrase you're referencing is likely a search string for Demi Lovato's self-titled fourth studio album,

: The M4A format (Advanced Audio Coding) is standard for purchases from the Apple Music Store

Before we dive into the guide, let's quickly explain what M4A is. M4A is a file format used for audio files, similar to MP3. However, M4A files are generally of higher quality and are often used for lossless audio compression.

: You can purchase and download the album on Apple Music (standard M4A/AAC format) and Amazon Music.