Effie is a singer/songwriter from Los Angeles, now based in Mexico. A top 20 finalist on American Idol (ABC, 2018), she has since performed worldwide and contributed to numerous studio projects. Classically trained, she excels in various genres, from EDM to powerhouse ballads, with a style influenced by Tori Amos. She tours the world with Postmodern Jukebox and Cello Voci, bringing her dynamic vocals to audiences everywhere. Effie also writes musicals and is known for her Disney princess-like vocals in kids' music. Follow her on Instagram @effiepassero for music updates and performances.

Tatum Langley is a powerhouse Chicago-based singer and theatre artist specializing in big band jazz and musical theatre. She has performed worldwide, from intimate jazz clubs and cabarets to renowned venues like The London Palladium, Sydney Opera House, and Massey Hall. A featured vocalist with Postmodern Jukebox, she regularly tours and records, amassing millions of views online. Tatum also sings with Chicago’s top swing bands and headlines at venues like The Drake Hotel, Winter’s Jazz Club, and Andy’s Jazz Club. Follow her on Instagram @tatumlangley.

Sara Niemietz is a Los Angeles-based singer-songwriter and actress who has performed on Broadway, at Radio City Music Hall, and the Grand Ole Opry. A longtime member of Postmodern Jukebox, she has appeared on a dozen albums, an MTV music video, and a PBS special. With over 25 million YouTube views, Sara regularly collaborates with W.G. Snuffy Walden and has co-written with Melissa Manchester. She has also been featured on projects with Richard Marx and B.J. Thomas. Follow Sara on Instagram @sarapalooza.

Tawanda Suessbrich-Joaquim is an award-winning jazz vocalist whose rich cultural heritage and deep musical roots shape her unique sound. Raised in New Mexico with German and Mozambican heritage, she was exposed to a diverse range of music, from African legends to classical composers. A graduate of Santa Fe University of Art and Design, she fell in love with jazz under the mentorship of Mirabai Daniels and Horace Alexander Young. Honoring icons like Billie Holiday and Ella Fitzgerald, Tawanda brings a message of healing and unity through her music. Winner of the prestigious 2020 Sarah Vaughan Vocal Jazz Competition, she now captivates audiences worldwide, performing with Postmodern Jukebox and Jeff Goldblum. Follow her on Instagram @hakunatawanda.