The carbon dioxide atmosphere on Mars has found to slow down the sound, but the high frequencies are slightly faster than the low frequencies at 900 km/h versus 864 km/h. For comparison, the sound on our planet has a speed of ≈ 1191 km/h.
On Earth, the sounds of an orchestra reach you at the same speed, whether low or high. But imagine, on Mars, if you are far from the stage, there will be a long delay
Sounds on Mars are even less tenacious. Due to the subtle atmosphere at a distance of 4 meters, you heard the interlocutor as if he were 65 meters away from you on Earth. NASA showed how birdsong, the ringing of a bicycle, the signal of a passing truck, ocean waves and music on Mars could sound.