Various Artists: I'm Just Like You – Sly's Stone Flower 1969–70

With just over two weeks to Christmas, thoughts might be turning to which of the deluge of 2014’s reissues might be suitable as a gift, worth putting on your own wish-list for Santa or even merit buying for yourself. So if help is needed, theartsdesk is happy to provide a one-stop guide to the essential reissues covered so far this year.

James Brown has always been on my Desert Island Discs list, because, should despair threaten, his brand of propulsive funk could be guaranteed to make the castaway "Get Up Offa That Thing". But despite a compelling performance from Chadwick Boseman that vividly captures Brown’s blend of charisma, drive, self-absorption and business savvy, the film is short on Brown’s most defining characteristic – vitality. The result is a missed opportunity that ends up being good enough when it should be galvanizing.

A first live experience of the French-Cameroonian singer Sandra Nkaké leaves many questions unanswered. Once the immediate bewilderment has passed, the most pressing question for a British audience should be: why is this extraordinary performer not block-booking the festival circuit? In a single set, accompanied by flautist and controller of the electronics, Jî Drû, Nkaké gave a stunningly complete display, as voice, accompaniment, movement and stage presence combined to project her mesmerising, leonine charisma.

How does an artist follow a debut album as well-received as Jessie Ware’s Mercury-nominated Devotion? With something just as insistent, just as beautiful and just as likely to stick in the brain. There’s something incredibly unassuming about the London-born diva, who despite having the sort of voice that would lend itself perfectly to big, belting R&B ballads, is content to play it subtle and let the music speak for itself.

Trailing a string of Grammys and multi-platinum albums, and now a successful actress and purveyor of her own "My Life" perfume for good measure, you wouldn't think R&B legend Blige had much left to prove. However, she evidently sees it differently, and she ripped through this compressed and streamlined Roundhouse set as if lives were at stake.

Recorded in the UK, Johannesburg, Paris and Tel Aviv, Sarah Jane Morris's latest album, Bloody Rain, is undoubtedly a labour of love. Hearing it performed live last night in the Union Chapel, in front of an adoring audience, confirmed that it is also her masterpiece.

Various Artists: Popcorn Girls

Laura Mvula, despite her exotic-sounding name, is a quintessentially British artist. Not just because of where she comes from – Birmingham – but also how she stays humble and understated while dripping with talent. Her story is equally endearing. Mvula was working as a receptionist when her debut, Sing to the Moon, was released. Overnight, her world was turned upside down and over the next year she was nominated for nearly every major award going, taking home two MOBOs and one Urban Music Award.

Just in case anyone thought the hype surrounding Gloucestershire-born Spanish/Jamaican singer FKA Twigs was based only on her unique looks, startling styling and slightly silly videos, this album begins with her voice alone. It too is utterly singular, a choirboy-like chant layered over itself like some New Age confection, before the sci-fi whirrs and booms of "Preface" remind us that we're in the currently hyper-fashionable territory of reconfiguring US R&B through the prism of British soundsystem music post-dubstep and grime.