getting first letters of a string

[perfringo]

There are several things you should take care of:

- if you want to call function then you need to use () i.e songnames = access_data()
- if function body doesn't return (or yield) anything it returns None (and your function does the latter)

So even if you fix your first problem you will run into second.

EDIT: if you fix your code you should also reconsider your approach. It's unclear what is you objective - 'first letter of a string' (as in thread name) or 'first letter of each word' in thread itself.