I think listening to and singing sacred music, especially choirs of pure souls like the Vera Choir and the Libera Boys choir. And the songs that are keynotes of ascended masters are especially powerful. The Libera Boys choir sings "Be Still My Soul" to the tune of Finlandia, Sanat Kumara's keynote. Here is a link to a youtube video of it that is a tribute to the victims of the holocaust. It has the lyrics as subtitles:
http://www.youtube.com/watch?v=jg6Qip32RZA&NR=1 Wayne