I guess this is sort of a tribute to my favorite brand of shampoo. In particular there is a recording I made from the late 1970s or early 1980s featuring me making noises with a tube (or bottle as I prefer to call it) of Prell Concentrate.
Superscope C-104 cassette recorder used to record my Prell Concetrate bottle.
Sony F-98 dynamic microphone used for Prell Concentrate.
Prell Concentrate sponsors The Doris Day Show!