Stare Dobre Małżeństwo (in English translation "good old marriage") is a Polish music group.

This musical style is characterised by the use of a guitar for accompaniment, while the lyrics often focus on hiking in the Polish mountains, love and adventure.

However, SDM quickly developed their own unique style, and gained fame due to their innovative musical interpretations of poems written by the renowned Polish poet Edward Stachura.

Additionally, they collaborated with another prominent author, the Polish poet Adam Ziemianin.

Furthermore, they often use poems of the forgotten poet Jan Rybowicz whose work addressed important questions about human existence.