Ein Trommler zu Pferde in Rückenansicht 

Theodor Roos, a Dutch artist born in 1638, created a pencil drawing of a mounted drummer in the 17th century. The artwork, titled "Ein Trommler zu Pferde in Rückenansicht", depicts a soldier on horseback with a pair of drums strapped to his back. The soldier is shown from behind, beating the drums with a pair of sticks. The drawing is characterized by Roos’s meticulous attention to detail and realistic depiction of the figures and their attire. The piece showcases the importance of military music and drumming in the 17th century. This piece is currently on display at the Städel Museum.