Once we have balanced our heart chakra, we can express our love and compassion with the help of a balanced throat chakra.  Here's a short meditation from The Chakra Diaries...
The healing green light of the heart chakra moves up the spine to the throat, where it becomes a beautiful sky blue. Breathe in the blue light, then fill your lungs and let your throat open wide and sing whatever tone or note feels right. You know what to say and what not to say, how to communicate well. Feel yourself singing out clear energy, loving notes, healing vibrations for yourself and the entire universe. Make yourself heard and listen well to the love that returns to you.
Namaste! Becca Chopra