yes you can save the logos on your file in Scratch to keep them if you like same as the A/T/B&O music and switch to X:0 Y:0 Size:100 (Save To .sprite3)
Probrobly those sounds could be: 1. The Morning Logo's laughter 2. The Afternoon Logo's grunting 3. The Evening Logo's whitsling 4. The Night Logo's breathing