The digital catalogs that music streaming services can draw on are governed by contracts between each service and the rights holders (artists, songwriters, publishers, and record labels). Some artists (usually big names with market clout) choose to opt out of allowing streaming. In addition, some older albums especially those that are on smaller independent labels, might not be available for streaming. The workaround, if you have a copy of the album in a standard digital format, is to use a service that allows you to upload your personal collection and keep it in your library alongside streaming tracks. YouTube Music is especially good at this task, with support for multiple high-quality formats even with free accounts, as we note in our capsule review above.