The records were made from shellac discs. Not only were they of poor quality and easily broken, but they could only contain three minutes of recording-- "singles" in the true sense of the word.
當時錄音是用手搖的方式，以水銀製的接觸器在蠟上製版，唱片則是用「印度洋乾漆」（又稱「蟲膠」）製的硬片製成，不但片質不佳，容易破碎，而且一面只能錄 3 分鐘，是名副其實的單曲唱片。