Yoko Ono and Lady Gaga are two of the most polarizing females in pop music, so when the two joined forces onstage in Los Angeles on October 2, history and headlines were made. The two ladies already recently irked Beatles fans when Yoko's son Sean Lennon allowed Gaga to pose with the late John Lennon's legendary white piano, and surely this new collaboration raised a few eyebrows as well.

Yoko, as part of a week of celebrations for what would have been her husband John's 70th birthday on October 9, held two all-star, sold-out We Are Plastic Ono Band concerts - her first ever L.A. shows - at Downtown Los Angeles's famous Orpheum Theatre this past weekend.

There she was joined for both nights by her son Sean as well as Jane's Addiction's Perry Farrell, Japanese electronic auteur Cornelius, Yuka Honda of Cibo Matto, Tune-Yards, Wu-Tang rapper RZA, and actors Carrie Fisher, Joseph Gordon-Levitt, and Vincent Gallo, among others; on night number one, additional guests included Iggy Pop, punk legend Mike Watt, and guitar hero Nels Cline.

continued...

But it was night number two, when her special guests were Gaga and Sonic Youth's Thurston Moore and Kim Gordon, that generated the most celebrity buzz.

By all accounts Gaga actually managed to upstage the notorious rock widow during her Plastic Ono Band performance, towering above the petite Yoko in her signature platform boots and shimmying in a lavishly crystal-covered, buttocks-baring black catsuit.

Yoko, a woman who's pretty much seen it all, actually seemed awed by Gaga, and even cuddled with her on top of a grand piano. (Note, sensitive Beatles fans: The piano was not John's aforementioned white Steinway, OK?)

Gaga joined Yoko for an enthusiastically received duet of a song of Yoko's latest album, 'The Sun Is Down', then later sang along with the entire supergroup for a rousing finale of 'Give Peace A Chance'.

Later that evening, Lady Gaga excitedly tweeted: "WE ARE PLASTIC ONO. I got to sit in as a guest musician tonight, what a legendary band + mother, Yoko." She also posted a Twitpic of her at the Orpheum with Sean Lennon.

Wow. Imagine, indeed.

Check out some other allstar highlights from Yoko's We Are Plastic Ono Band concerts:

NME.COM blogs contain the opinions of the individual writer and not necessarily those of NME magazine or NME.COM.