Can the word 'sound' take the plural 's'?

For those who did the graded Editing Practice recently, recall that I said 'sound' as a noun rarely takes the plural 's': -- the sound of our own voices

But in specific situations, exceptions exist, as in these two titles I came upon in today's papers:

1) Click HERE : SoundS of Singapore: Musicians studying traditional music across cultures

2) Click HERE : Great soundS  from unusual unions

Here's a few more:

- there are strange soundS coming out of the toilet

-can hear the soundS of grief in the air after the battle

For reference, see HERE