Describes and comments upon three compositions by Weber for trumpet: "TUSCH (fanfare) for 20 Trumpets," written in 1806, a brief canon for four F-sharp trumpets added humorously to a letter to Gansbacher in 1811, and "MARCIA VIVACE for Trumpets," written in 1822. Discusses sources or editions for each of these compositions and points out previous transcription errors. Shows in a thematic outline the similarities between the music of MARCIA VIVACE and the vivace section of the finale to Act I of Euryanthe. Concludes that this composition was probably written for keyed trumpets. Points out similarities between the TUSCH and Wagner's Prelude to Die Meistersinger. Calls attention to recent editions and a recording (compact disc, Nimbus Records, "Trumpet Concertos and Fanfares (N15065). Well documented.