sentences:  During the 78 era, when the maximum capacity of a single ordinary record side or cylinder was less than five minutes, Spalding recorded extensively for Edison Records, with some issues on cylinders and many more on diamond discs.Most featured short works or encore pieces that could fit on a single record side.These recordings were all by the acoustical process, as well as vertically-cut, through 1925, but he made his first electrical recordings in 1926 for Brunswick Records using that company's problematic "Light-Ray" system.