Born in New York to Korean and German parents, she first sang publicly at age 2, began playing piano at age 5 and joined rock bands as a young teen. She worked with teachers from the Juilliard School as a teen; her focus on Classical music led to numerous piano recitals and learning to arrange and compose instrumental music. She has performed internationally since her teenage years when she was both lead singer for the punk band "Kikigurushii" in Kyoto, Japan and concert pianist in the United States. CNN presented Miss Reimann and Grammy-nominated violist Paul Coletti's performances and arrangements of Astor Piazzolla via live broadcast from the Argentine Consulate General; their live performances were also heard internationally. Venues include Lincoln Center, the Bitter End, Knitting Factory, Cutting Room, Grand Canyon Music Festival, Bargemusic and many others for her work as a piano soloist, chamber musician, singer-songwriter and rock musician including accordion with the all-female Main Squeeze Accordion Orchestra, keys and vocals with the indie Rock bands Last Tango, Loaded Dreams, and various other local New York ensembles.