The SATNAM mantra is one of my favourites and is widely used in Kundalini yoga.

This mantra is called the Primal Sound Mantra, because it consists of the five primal sounds: S,T,N,M, and ah. The literal meaning is as follows: Sa means birth (or infinity); Ta means life; Na means death; and Ma means rebirth. Thus, the mantra describes the eternal circle of life: birth, life, death, rebirth.  

SA is the beginning, infinity, the totality of everything that ever was, is or will be.

TA is life, existence and creativity that manifests from infinity.

NA is death, change and the transformation of consciousness.

MA is rebirth, regeneration and resurrection which allows us to consciously experience the joy of the infinite.

In addition..

Sa: evokes a sense of emotion and expansiveness
Ta: creates a feeling of transformation and strength
Na: stimulates a sense of universal love
Ma: evokes the quality of communicativeness

In this meditation, which could be practised either lying in savasana or seated comfortably, I have brought together mantra (sound), mudra (gestures) and a connection to the corresponding chakra.

Enjoy!