In November 1996 Rinpoche spent a week of Ngondro practice with an international group in the Halscheid Retreat center Karma Thekchen Yi Ong Ling.
During this time he gave some explanations, the main part of the time was spent on practice. In the mornings everybody started with Prostrations, Refuge and Bodhicitta, after breakfast the group did Vajrasattva Mantras together with Rinpoche, in the afternoons they did Mandala offerings together, and sometimes in the evening Guru Yoga.
The goal was to accumulate the 4 x 100.000 as a Sangha group. Everybody counted their practice, and in the end they committed to do their share of practice to finish the numbers.
They used the traditional long version, at that time the shorter version of HH 17. Karmapa did not exist yet.
The audio recordings give an impression of the joyous atmosphere of the retreat.

The retreat was originally recorded on audio tapes and there is usually a short gap around minute 46-47

Part 1: Discussion how to organize the retreat, explanations about prostrations and refuge, then from min 50 explanations about Vajrasattva purification practice.

Part 2: End of Q+A session, min 6 begin explanations about Mandala offering, min 47 next morning, introduction to the retreat for people who arrived later, min 1.00 next session, Mandala practice together.

Part 3: Practice of Guru Yoga, min 27 explanations about Guru Yoga, min 1.09 prayers and Vajrasattva practice

Part 4: cont. Vajrasattva practice, min 32.15 begin explanations about the value of the Ngondro practice.