Early Frost) were a Yugoslav rock band from Novi Sad, formed in 1977 by former Žetva member Đorđe Balašević.

Rani Mraz was formed at the end of 1977 by former Žetva members Đorđe Balašević and female vocalist Verica Todorović.

The band had their first public appearance in December 1977 at the Sportsman of the Year Award ceremony, held in Belgrade's Pionir Hall, where they performed Žetva hit "U razdeljak te ljubim" ("I Lay a Kiss on Your Parting"), with alternative lyrics and entitled "U levicu te ljubim" ("I Lay a Kiss on Your Left Hand"), dedicating it to boxer Mate Parlov.

The band was invited to perform for the president Josip Broz Tito, and for this occasion Balašević wrote "Računajte na nas" ("Count on Us"), a song which praised People's Liberation War from a slightly different perspective than habitual socialist realism.

This lineup of the band recorded "Računajte na nas" and released it as a single, with the song "Strašan žulj" ("Awful Blister") as the B-Side.

Balašević entertained the audience with his humorous stories and Đorđević performed his songs "Lutka sa naslovne strane" ("Doll on the Front Cover"), "Mirno spavaj" ("Sleep Peacefully"), "Zvezda potkrovlja i suterena" ("Star of Attics and Basements") and others.

In 1979, Rani Mraz released their debut album Mojoj mami umesto maturske slike u izlogu (To my Mom instead of a Prom Photo in the Shop-Window).

The album featured hits "Priča o Vasi Ladačkom" ("The Story of Vasa Ladački"), "Mirka", and "Menuet" ("Minuet").

Biljana Krstić started her solo career in 1983, with the album Prevari noćas svoje društvo sa mnom (Cheat on Your Friends with Me Tonight).