In 1981, both The Austin Chronicle and Austin Record Convention began. Waterloo Records opened the following year. This spring, during the other half of the ARC’s semi-annual schedule, the Hanners – your hosts – brought out a cake flashing back to the cover of 1969’s Let It Bleed by the Rolling Stones. No word whether that vinyl gâteau returns this pre-Halloween weekend, but obviously note the event’s anniversary number, because everyone knows true record men and women do it at 45 rpm. Whatever your pop mart fantasy – vinyl, cassette, cotton, hardback – the musical treasures in one room for one weekend truly defy description. Early shopping Friday ($30), then $5 buys both Saturday and Sunday in the ballroom. – Raoul Hernandez