Loving-kindness, as is often taught, would be considered a concentration meditation practice, because as we get into the meditation, we will be concentrating on repeating phrases and bringing intentional effort and energy to developing an attitude of mind with these words we will be using.
This 30-minute Buddhist meditation, followed by a short discussion, is based on 'Against The Stream: A Buddhist Manual for Spiritual Revolutionaries'.
We're making all of 'Against The Stream' available for free on our blog (one piece at a time). Read along. Link in episode notes.