Mention of the "Scherzo Waltz" by Ilgenfritz prompts me to point to an interesting comparison.  The transcription on the late John Roache's web site is from an Ampico B roll published in August 1929.  However, Ilgenfritz recorded the same piece for the Duo-Art in August 1914.  The Duo-Art recording, being one of the dreaded "first 100", leaves much to be desired, as does my emulation of the expression.

Despite such problems, it's still possible to hear a very obvious difference in musical styles.  The 1914 Duo-Art performance clearly belongs in an Edwardian drawing room  whereas the Ampico version, produced a mere fifteen years later, would be at home in a stylish cocktail bar.  Comparison of the two performances provides a good indication of the great changes, both technical and musical, which took place during the player piano "heyday" years.

Richard Stibbons
26 Jul 2005 09:30:32 +0100
 

1. Scherzo Waltz (McNair Ilgenfritz), played by McNair Ilgenfritz
    Duo-Art 5560 (August? 1914); Shown in Preliminary Catalog, December 1914
    Ref.: Charles Davis Smith: Catalog of Duo-Art Piano Rolls, copyright 1987 by Charles Davis Smith, published by The Player Shop, 635 South Myrtle Avenue, Monrovia, California 91016.
Ilgenfritz_ScherzoWaltz_Duo-Art5560.mid (12 kb)  Transcribed and emulated by Richard Stibbons, 2000.

2. Scherzo Waltz (McNair Ilgenfritz), played by McNair Ilgenfritz
    Ampico 70083F (August 1929)
    Ref.: Elaine Obenchain: The Complete Catalog of Ampico Reproducing Rolls, copyright 1977 by William H. Edgerton, published by William H. Edgerton, Box 88, Darien, Connecticut 06820.
http://www.johnroachemusic.com/rolls.html#sch   Transcribed and emulated by Richard Stibbons, 1998.