^ - begins with (eg. Beatles and Barenaked Ladies = ^b)

$ - ends with (eg. Love Song and Banana Boat Song = song$)

* - wildcard (eg. walk* = walking, walks, walked, walker, etc.) This is most effective when used in the middle of a word, because it is automatically added to the beginning of each word.

:: - entered alone, two colons together will generate a random list of 20 songs