If a Devout Athiest can sing Amazing Grace (& I do) then the answer in this computer has to be YES.
The problem I have is finding an Athiestic song that holds some merit
It is in human nature to say "Yes" more readilly than "No" so any song that is negative may very well be unappealing to most listeners. If most people don't like it then it is not likely to be sung.

well this is what I believe.