Isochronic Tones To Help You Meditate
Here is a simple video with an isochronic tone in Eb, in the theta range. Apparently, these tones can help with brainwave entrainment and get you into the meditative state. See if it helps you.
These are simple isochronic tones without much else going on. They have very faint carrier waves and are meant to be pretty raw. For far more interesting ones, check out this link if you want. Some are free, most are for sale, but they are pretty cool.