The crossword solutions for the term ARENA SOUNDS are RAHS and OLES. RAHS stands for Reverberation And Harsh Sounds, which are the sounds that echo in an arena due to its large size and hard surfaces. OLES stands for Overlapping Echoing Loud Echoes, which are the echoes of sound waves that overlap each other in an arena. Both of these terms refer to the reverberations and echoes that occur in an arena due to its large size and hard surfaces.