"Of all the great memoirs to come out of the Black Power Movement (Angela Davis, Bobby Seales, Amiri Baraka, Nina Simone) Assata is my favorite. I draw a lot of inspiration from the Black Power Movement, and the way that she describes her activism is overflowing with passion and heart."

"I had my operatic knowledge, and I had this interesting collection of artists I was dedicated to: Judy Garland, Nina Simone and so on – I could have put Nina Simone on this list – but this record by Bob Dylan was a way to relate to my parents a little bit. I wouldn't necessarily say I'm a huge Dylan fan, but I appreciate him, I understand his greatness, and it's really now that I'm starting to dig into his catalogue and cherish his existence. But in general, I'd say a lot of his recordings make me think of my dad – that's not the sexiest thing, but Blonde on Blonde broke through the barrier, and particularly the song 'I Want You' kept the thread going."

"A really definitive film about an incredible woman. She’s mint – the end! But seriously: I’m obsessed with the model Nina Simone set out for women. She allowed us to sing in lower, stranger registers. She made politics a central part of her art. She was uncompromising. The way her daughter leads her story in this film also gives it a really special perspective. You can’t help but feel humble before her."

"Nina Simone is special to me because of her voice, the fact that she sings very low. When I listened to her voice for the first time, I asked my husband, 'who is this man?' and he said 'no, it's a woman!'. I told him: 'no, it's impossible, she's got a voice like a man!'. That was my first impression of her voice and of her music. I like to sing very low when I'm in the studio so I felt very comfortable listening to Nina Simone, because this is the way that I wanted to write my music and sing. Also, the fact that she wrote a lot of protest songs. 'Feeling Good'- you can interpret it as you want. When I listened to this song for the first time, it was my introduction to Western music. I was in Paris, and listening to this song was like freedom to me. Freedom, because when I left my family [in Mali], I ran away."

"She takes that song 'Ain't Got No, I Got Life' and makes it so much more than a silly musical song [from Hair], she gives it emotional depth. That's the great thing about Nina Simone - she did so many Bee Gees songs - and the Bee Gees are this agreed-upon joke. I think the Bee Gees are amazing geniuses - they are just so prolific and the fact that they were able to make all these changes and keep going. They did this Beatles-esque psychedelic thing which I think is awesome and went onto becoming the kings of disco, and wrote that Kenny Rogers and Dolly Parton song, 'Islands In The Stream'. Nina Simone hears a Bee Gees song or someone suggests it to her and she goes, ""That's such a sweet song - those guys have no soul at all, but I'm gonna make this song sound awesome."" What I love about that album is that it's mostly all recorded live - there's real space to it because of that. That's something we tried to do for the musical - record it live, we wanted to record it in the same room, but because there were so many elements we had to put in it was impossible. The album was recorded four days after Martin Luther King's death. I don't know how big Nina Simone really was in her lifetime, but it feels like we are lacking in politicised chanteuses right now. I think now [there's] this real era of Christian rock - people just want to be uplifted. It's kind of that dynamic thing that the critic criticises Cat Stevens for; you can probably criticise Coldplay or Mumford & Sons for the same kind of thing. Like, ""Oh you're just toying with me, you're starting all small and then making it huge, of course I have a religious feeling right now!""

"I love weird people. The thing about voices is there's this idea, and this is my favourite thing about punk, is that I get really sad when people say they can't sing. That's not true. Anyone can be a singer. But when you hear Nina, she sounds like the exorcist. She uses all of her different voices. I don't even know another Nina Hagen record because that's the only one that ever really resonated with me. Playing that at Little Girls Rock camp [a foundation that funds and supports music education for young girls, of which Ditto is on the advisory board along with Tegan And Sarah and Kathleen Hanna], it blew their fucking minds. It blew their minds, and that is why I love Nina Hagen, and Yoko Ono, Diamanda Galas and Nina Simone because all of their voices are instruments. And her look! I met her and what did she say to me, "I didn't escape East Germany for nothing". Her story is phenomenal. It makes sense, because when you come from that kind of place you have to push the envelope because there's nothing to guide you. You have to make it up yourself and when you get to do that without pop culture references you get fucking Nina Hagen. It's so rare. I wonder what the next level of really untouched creativity will be? I wonder what that will look like? "

"What an amazing artist! She is the first woman that I was ever introduced to that played classical piano and melded it with her own style and emotions! I think the whole world should know and respect Nina Simone as I believe she is one of the absolute GREATS! The song 'Sinnerman' on this record is one of my all time favorites and whenever I hear her music, it reminds me to be as different, and skillful, and brave that I can be. And this song is the best way to feel this way."

"Along with Patti Smith and Mary Margaret O'Hara, I would say that Nina Simone possesses the greatest voice I have ever heard. Nina's voice, my god, on songs like 'Sinner Man' or 'I Put A Spell On You' is beyond compare. If you really want to get Nina Simone, you need to get on YouTube and watch the early footage. There is 25 minutes of footage of a performance she did in England, after Martin Luther King had been shot, and she is playing to mainly a white audience. It is the greatest set of protest songs I have ever seen. It puts Dylan or anyone else into the shade. If you wish to see how to change the world with music, look at this dignified woman holding back her rage at what had been done to her people. [Fighting back tears] Nina Simone carried the weight of black experience more fully than anyone else I have heard. There is also some amazing footage of her dancing with the audience. It's when she was less bitter and her bipolar disorder hadn't kicked in, and she is dancing and singing. When you watch her move, you can see the music is in every part of her body. With the songs Nina wrote, her position in the civil rights movement, and then the fact she became broken, it is just one of the most devastating stories. [Crying]. But, her voice, fucking hell. And the song 'Ain't Got No, I Got Life' – on which she lists all the things that she hasn't got, but then lists all the things she does have, which are her passion and her spirit – gets me every time. It's important people go and check out the early footage on YouTube. When she sings 'I Put A Spell On You', you fucking know she has put a spell on that guy, who was her ex-husband. You do not fucking mess with that woman. I heard a lovely anecdote about Angelo Badalamenti, who was a desperately impoverished guy who had just given up his job to become a songwriter. He had been earning nothing for 18 months, and had sent some songs to Nina Simone. He got a call from her manager saying that Nina would like to meet him. He went to the place at the arranged time, walked into a room and there was this amazing lioness, lying on a sofa dressed in leopard skin. She said, ""I hear you have some songs for me. Play me one."" There was no piano, so he had to sing to her. He sang about a minute of 'I Hold No Grudge' and she said, ""I will take that"" and asked him if had any more. He sang another song for about 30 seconds, and she said, ""I will take that too"", and he sang a snippet from another one, which she also liked. Within two weeks, she had recorded all three songs and launched his career as a writer. Angelo told me that story when I made an album with him."

"When you’ve got a favourite artist, you want to know everything about them, from their favourite colour to what they have for breakfast, and you get that with this Nick Cave documentary. It’s clear how every detail has been carefully and thoughtfully curated by him. I love the glimpse into the friendship between him and Warren Ellis when they’re discussing the time they met Nina Simone, and she said what she wanted to have after her gig: “I want champagne, cocaine and sausages!” They look like little boys when telling the story. It’s a beautiful insight into their world outside of music-making"

"He was the great innovator and the forerunner to make black music ‘acceptable’ to the general white population of America, and the world. When he came out, you just couldn’t ignore the impact of his voice and delivery of music with piano and arrangements. Putting him and Little Richard together, they’re kind of similar in a way because they had such a big influence. But I can’t ignore the contribution that Ray Charles has made to soul and music at large. If there’s one person that I could emulate with my voice, it would be Ray Charles, perhaps with a little bit of Nina Simone thrown in. I never saw myself as a white boy singer."