As well as composing her own music, Leonie has a passion for old Jazz, Blues, Country & Gospel music. Over the years she's sat in with hundreds of bands and travels to New Orleans every year to learn from the best.

She's played with groups such as Tuba Skinny, Honky Tonk Sail, Blue Mockingbirds, Blind Boy Paxton, California Feetwarmers, Holy Crow Jazz Band, Frog & Henry, Meredith Axelrod, Jazz Cannibals, Kansas Smittys, Man Overboard, Cakewalk cafe orchestra, Ragtime Nightmare and many more as well as countless amounts of solo and duo concerts.