After earning acclaim as a jazz musician, Marsalis has set about bravely exploring almost every genre outside of jazz, earning him a CV that is dizzying in both length and diversity. On the road with Sting in 1986. Credit:Seven Keys The son of jazz pianist and educator Ellis Marsalis – and one of four sons to become jazz musicians – Marsalis cut his chops playing with illustrious trumpeter Clark Terry and drummer Art Blakey in the legendary Jazz Messengers. He moved to New York in 1981 to join younger brother Wynton's band when the young trumpeter's star was rising meteorically; Wynton appeared on the cover of Time (the story heralded the dawn of "The New Jazz Age") and was the first person ever to win Grammy awards for both the jazz and classical music. They played with a roll-call of all-time greats – Miles Davis, Dizzy Gillespie, Herbie Hancock, Sonny Rollins. But Marsalis left the safe confines of the Wynton Marsalis Quartet to tour with Sting in the 1980s before becoming the first musical director of The Tonight Show With Jay Leno. He stretched the bounds of fusion by forming hip hop/funk group Buckshot LeFonque in the 1990s and made an impromptu appearance on stage with the Grateful Dead at New York's Nassau Coliseum in 1990, a performance that has gone down in Dead folklore as one of the greatest. He has scored Broadway productions such as The Mountaintop, with Samuel L. Jackson and Angela Bassett, all while maintaining his own band, the Branford Marsalis Quartet, for two decades. Just to top it off, he co-starred in the Spike Lee film School Daze. Because, why not? "The brain is incredibly lazy," Marsalis says, launching into one of his many theories on life; this one about why he thinks it's better to go out on a limb and embrace new genres, despite the risk of feeling hopelessly out of depth. He leans in when he talks and sustains intense eye contact. Each sentence is short with a moment's silence at the end, to really emphasise his point.

"By the time a child is about seven or eight the brain is like, 'I have all the keys to the universe I need right now', which is why learning is often a struggle. It's human nature to not address your shortcomings. The great thing for me is, I played with my brother's band and everybody said, 'You're incredible!' And I was like, 'Haha, not really'. And then I played with Sting and everybody was like, 'Oh man it doesn't get any better than that?' And I'm like, 'Ah, I think it does.' "If I needed the adoration of others, I was pretty much done in 1985. But since I'm lucky enough to not need it, I said, 'Well what else can I do to make myself better?' One way you can do it is to double down on your strengths ... but I decided I'd go out there and find out how good I can be. People routinely stay in their lanes. They lose the thrill. Know what I'm saying?" I grew up with Dolores Marsalis! What the hell do I care about a bad review? Growing up in New Orleans – the mecca of jazz and a music scene that manages to stay egalitarian and unpretentious – made him equal parts cocky and humble. He's not afraid to fail at something, and he's also not afraid to tell you he's not afraid. Undoubtedly his home life played a role, too, where he was one of six children in the famous Marsalis family, often dubbed the First Family of Jazz. (There's Wynton, 57, trumpet supremo and veteran director of Jazz at Lincoln Centre; Delfeayo, 53, a trombonist and record producer; Jason, 42, a drummer; Ellis III, 54, who eschewed music to become a poet and photographer; and Mboya, 48, who is severely autistic and often cited by the brothers as their musical inspiration).

Their father, Ellis Marsalis, has never been one for platitudes and emphasised earnest work ethic over braggadocio. He mandated that each son would play a different instrument so there'd be no sibling rivalry to stoke their egos. Marsalis' mother, Dolores, who died in 2017, could be wincingly harsh. When she came to see a less-than-polished Buckshot LeFonque gig in the 1990s, she told the band it was "some of the saddest shit I've ever heard". "Y'all should be embarrassed," Marsalis recalls her saying. Branford Marsalis exudes a cavalier swagger. Credit:Eric Ryan Anderson "Some people say, 'Well, how do you deal with bad reviews?'" he says. "I say, 'I grew up with Dolores Marsalis!' What the hell do I care about a bad review?" Blistering honesty runs in the family; the brothers don't often talk music, but if they do, it's usually to point out where the other could be better. Marsalis prefers is that way. How does flattery help you improve? There has also been the odd unsubtle dig at the different paths they've taken, like Wynton, a jazz purist, saying in the 1990s, "There's nothing sadder than a jazz musician playing funk". As he empties his second glass of red and the sun begins to dip behind the city skyline, the self-flagellating only continues. Marsalis talks about his move into classical music about 20 years ago, yet another experiment in torching the boundaries of his comfort zone, and emphasises how awful he was for the first seven years. It took him two days to learn how to execute a down beat, the moment the orchestra starts playing together. In jazz, the down beat is negotiable; for the musicians of New York's Orpheus Chamber Orchestra, who were a tad wary of this imported jazz man, it was not.

"At first, yeah, I was terrible, as I should have been. It's like an American baseball player deciding he wants to fly to Melbourne and play AFL," he says. "But I was undaunted. Because the only way to not feel like shit, is to feel like shit." The rest of the world must have been oblivious to his failings because Marsalis has been flown to almost every corner of the globe and implanted into various orchestras, taking on compositions by Debussy, Vivaldi and even works by Brazilian composer Heitor Villa-Lobos arranged for solo saxophone and orchestra. In Australia in May, he will perform a Latin American-flavoured program with the Australian Chamber Orchestra, including an arrangement written for him and premiered in Australia by Scottish composer Sally Beamish, who usually writes for viola. "It has made my jazz playing exponentially better," he says. "All those little things; suddenly I had to be very precise. [I] started paying attention to the sound of things because you can't have a one-emotion-fits-all like you can in your own music. Suddenly I'm responding to sounds differently, asking, 'Is this a happy ballad? Is this a sad ballad?' These aren't jazz musicians' discussions. Jazz musician discussions are about tempo, structure." The more jazz has changed, the more Marsalis has gravitated towards classical music. It's the reason he moved his young family to Durham, an artistic city in North Carolina, 10 years ago; the New York scene wasn't inspiring anymore. (He'd also had enough of "New York living", of five-year-olds calling adults by their first name). Today's jazz musicians are too mathematical and wonkish, he says. Jazz clubs are half empty, only frequented by other musicians who appreciate each other's showmanship. Listeners need music degrees to understand what they're playing. The music has become rigid. Improvisation is mostly over-rehearsed regurgitation.

"[I'm often asked] the question, 'Jazz is so unpopular, why do you think that is?' And the answer is simple: the musicians suck," he says with typical subtlety. He says the shift started in the '90s and I can't help but think the Marsalis family was not immune. While they still wield incredible clout, nothing can compare to the two decades in which Wynton and his siblings seemed to ruled the jazz universe. In 2003, the music critic David Hajdu stumbled upon Wynton playing as a sideman with a band in a near-empty jazz club in New York, and wrote a piece in the Atlantic (tartly titled "Wynton's Blues") hypothesising that Wynton's stifling orthodoxy and nostalgia was partly to blame for both his and jazz's dwindling relevance. It's nevertheless hard to see that Branford Marsalis is slowing down in any way. Not in the flood of opinions he wants to impart. Nor in his commitment to improving music or lifting standards. Not in the pace and scope of his work, nor with that bottle of red wine. And especially not with the tempo of Thelonius Monk. Branford Marsalis plays with the Australian Chamber Orchestra in Wollongong on May 9, Canberra on May 11, Melbourne on May 12 and 20, Brisbane May 13 and Sydney between May 18 and 22.