The Tibetan Book of the Dead: The Great Liberation Through Hearing In The Bardo (Shambhala Classics)

by Padmasambhava

six types of liberation: liberation through hearing, liberation through wearing, liberation through seeing, liberation through remembering, liberation through tasting, and liberation through touching.

Bardo means gap; it is not only the interval of suspension after we die but also suspension in the living situation; death happens in the living situation as well.