Another Bling47/EMERGENCE exclusive from Invincible – this time I’ve got an unreleased track from the same sessions that spawned last year’s underground classic (yeah, I said it), ShapeShifters. The song is “Taxicab Confessions” and it was produced by the legendary Brooklyn-based duo, Da Beatminerz – best known for their classic work with Black Moon and the Boot Camp Clik.

Invincible graciously gave me the song for download as yet another prelude to her upcoming “Ropes” video dropping next week. As to why she chose this song to coincide with the “Ropes” video release, Invincible said “[It's] one of the most personal joints I’ve ever written, next to ‘Ropes’ – they go hand in hand. It would have made it on ShapeShifters but just didn’t fit the sequence.”

To go along with that, I’ve also included the trailer to the upcoming documentary, Say My Name. The feature-length film is a tribute to and exploration of female lyricists by the Amsterdam-based production company, Mamamess. The film will be playing at SXSW this week and features interviews with Invincible, as well as everyone from MC Lyte, Roxanne Shante, Monie Love & Erykah Badu to Estelle, Jean Grae, Miz Korona, Mystic and more.

You can download “Taxicab Confessions” below and catch the Say My Name trailer after the jump. Also, be sure to check out the event listings for Invincible performing throughout the SXSW Festival this week – and be on the lookout for the official “Ropes” video premiere on Okayplayer next week.