This is going to sound a little naive, but can someone explain this 'copyright' thing in words of one syllable to me please?

For instance, the stuff I've recorded is from my live 'gigs' and is usually just me singing. My homemade CD's are just giveaways amongst friends and fellow song-lovers.

Do I need to get in touch with the songwriter of a contemporary song for permission?

If so, perhaps I should just send a 'trad' song, but I think I know which song people would prefer...

Hils