This experience happened in February of 1973.  I had returned from India the end of the previous December.

I was trying to carry on with the routine Swamiji had suggested for me, and was doing my asanas in the room that had been his when he stayed with us.  I had completed the asanas and was sitting for meditation when I clearly heard the haunting sound of a flute.  The beguiling sound was loud enough to be very close by.  I knew that there was no one playing a flute in my house, and wondered if it was coming from next door, although that did not seem likely.  The sound did not continue and so it remained a mystery.  A few days later the incident with Priscilla occurred.  Only then did I realize that it was indeed Lord Krishna who had played his flute for me.