Když struny lkají
| Když struny lkají | |
|---|---|
| Directed by | Friedrich Fehér | 
| Written by | Quido E. Kujal Josef Kodíček  | 
| Based on | The Devil by Leo Tolstoy  | 
| Cinematography | Václav Vích | 
| Edited by | Friedrich Fehér | 
| Music by | František Alois Tichý | 
Production company  | A-B  | 
| Distributed by | Elektafilm | 
Release date  | 
  | 
Running time  | 63 minutes | 
| Country | Czechoslovakia | 
| Language | Czech | 
Když struny lkají (English: When the Strings Wailed) is a 1930 Czechoslovak drama film directed by Friedrich Fehér. It is considered the first Czechoslovak film fully made with synchronized sound.