You can find guitar chords and tabs for Azra's discography on sites like Scribd or dedicated Balkan guitar sites like Akordi-Online. Audio & Cover Inspiration
Specifically the declaration of martial law in Poland on December 13, 1981, to suppress the "Solidarity" union movement. azra_proljece_13_u_decembru_cover_by_pps
There are various community covers on YouTube that can provide different stylistic ideas for your own rendition. You can find guitar chords and tabs for
The "spring in December" represents a political awakening or revolution occurring during a "cold" period of state control. Lyrics & Chords azra_proljece_13_u_decembru_cover_by_pps