The term 'Sounds of Wonder' is a phrase that refers to the awe-inspiring sounds that can be heard in nature. The crossword solutions for this term are 'OOHS' (4 letters) and 'OHS' (3 letters). OOHS is an expression of surprise or admiration, while OHS is an exclamation of surprise or wonder. Both of these words are used to express the feeling of amazement and wonder that one experiences when hearing the sounds of nature.