A couple of tracks I've had good results with...
William Buhlman -Vibrational Technique For Astral Travel
William Buhlman -Chakra Technique For Astral Travel
A Brainwave Entrainment 7.83 Hz Schumann Resonance

The Schumann one is good for grounding, excellent for reducing stress & I use it regularly as a starter for longer hemisync sessions.

Note the 1st 2 are voice-guided.