Just six months after admitting she had “no idea” if she would ever perform again (as we reported here), “Baby One More Time” diva Britney Spears announced she’s making time to head to the studio to crank out new music.

As previously reported, Spears stunned her loyal fans (the #BritneyArmy) when she marched to Instagram Wednesday (December 22) to show off her vocal prowess and announce new music was on the way.

And while the a capella performance is garnering mixed reviews, there’s one longtime supporter who is making clear that she’s very much here for Britney’s return – her ‘SMS’ co-star Miley Cyrus.

Four hours after the video above was lifted to Spears’ Instagram account, it accrued a whopping 4.8 million views and thousands of comments from well-wishers.  Among them was Miley, who is not only one of her generation’s most revered vocalists but has made headlines in the past for flexing her vocal chops to one of Britney’s biggest hits (‘Gimme More’).

A staunch supporter of the GRAMMY winner amid her highly publicized, 13-year battle for freedom from the legal stronghold of a court-ordered conservatorship, Cyrus stayed true to form when she took to Wednesday’s singing post to brand Britney the ‘Vocal Bible.’

The phrase ‘Vocal Bible’ – historically associated with highly exalted vocalists like Whitney Houston, Brandy, and others – is afforded to singers whose vocal stylings are considered unmatched, inimitable, and cited by peers, other revered vocalists, and admirers as a standard to be followed.