Studio & Stage

Producer, Songwriter, Music Director, Instrumentalist — from the studio to the Royal Albert Hall. Indie-folk leaning with hints of pop, classical, and jazz sensibilities.

Justin James Sinclair in the studio
88M+
Streams
Top 5%
Songwriters
Top 10%
Producers
Producer Songwriter String Arranger Multi-Instrumentalist Vocalist Engineer

With credits alongside Weezer, ROSIE, Ilsey, MILCK, The Brilliance, Mark Barlow and many more, Justin brings a songwriter's ear and a producer's instinct to every project.

View full credits on Muso.ai

Production & Writing Credits

88M+ streams · Weezer, ROSIE, Ilsey, The Brilliance & more — click to explore

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Portfolio

Recent Work

IlseyMusic Director · Guitar · Vocals
RosieString Arranger
Brother JamesArtist · Writer · Producer
Jason Sibi-OkumuGuitar · BGVs
Georgia ParkerPiano
Tashi TKeys

On Stage

I've had the privilege of playing all kinds of stages with incredible musicians all over the world. Whether I'm playing guitar or keys in support of another artist, leading a band in some jazz standards, singing classic 70's love songs with my wife for a wedding, or playing my own songs for an intimate living room — there's nothing I love more the deep connection that comes in sharing music together.

Ilsey

Folk-pop legend, feat. Bon Iver
MD, Guitar, Vocals
Played Royal Albert Hall

Samantha Margret

Dark-Pop Goddess
Music Director
Touring locally

Weddings & Events

Hundreds of Events & Weddings
Solo, Duo, Full Band
Wide repertoire and genre range

Brother James

Living Rooms & Spiritual Gatherings
Storytelling & Discussion
Turning strangers into family
The Nest studio Vintage piano Bookshelf and instruments Recording setup

The Nest

A cozy studio tucked into the hills of Mount Washington (near Highland Park, LA) — warm lighting, bookshelves lined with books, poetry and classic spiritual texts, and everything we need to write and record great songs. There's always tea or coffee brewing and meaningful conversations to be had which will lead us to the right song.

Whether we're writing songs, producing a track, or tracking strings, the space is designed to feel more like a living room than a control room. Come hang and work with me in my little pseudo-monastic Nest.

Kitten warning: we have two adorable baby cats (Leo & Pema). They're super friendly and cuddly and great silent studio cats, but if you have allergies let me know and we'll work out a plan! Yes, that is an actual picture of Leo.

Let's Create Something Together

Looking for a producer, a co-writer, music director, or anything in between?