How to run Say "something" in background in AppleScript

I would like to have AppleScript code like this:

row 1
say "some long text here"
row 3

When it starts to speak text, it same time continues to row 3.

I create my scripts in AppleScript Editor and i don't know enough about process control on OS X to understand backgrounding yet.

Solution 1:

Like this

say "some long text here" without waiting until completion