Pani Mathi Mukhi Bale, a beautiful and famous Malayalam padam composed by Swati Tirunal in the haunting raga called Ahiri. This padam emotes the feeling of viraha, i.e separation from a beloved one. Here is a version by the great singer KV Narayanaswamy. The slow pace perfectly illustrates the sentiment and pain of separation from a dearly loved one.
Here is a version of this padam used in Mohiniyattam.