The launch of YouTube Music Key, the streaming giant's paid music subscription option, set to debut today, has been pushed back to tomorrow (Nov. 18), a Google spokesperson has confirmed to Billboard. Music Key lets users stream music ad-free, as well as listen without an internet connection. The service is set to cost $7.99 to beta invitees and $9.99 when it is released publicly and comes with a membership to Google's streaming service, Google Play Music.

YouTube's Music Key: How Much Could Its New Paid Service Pay Out?

The announcement and subsequent launch last week of the YouTube's free tier went off without a hitch -- technologically, at least. Mobile and desktop users can access the site's new music section from a link at the top of its homepage. As well, when an artist is searched for the results page offers a track and album listing as well as a Pandora-like "endless playlist" option.

Can YouTube’s New Music Play Mend Its Fences With the Industry?

However the launch, like that of any digital music product of the last decade-and-a-half, was not without some controversy. Irving Azoff's new publishing company Global Music Rights threatened to pull the 20,000 songs on YouTube that it controls, citing songwriting and publishing licensing terms, which have been an less-acknowledged point of contention within the still-raging debate over music streaming.