This sound effect can be found on The Premiere Edition Volume 1, which was made by The Hollywood Edge. It shouldn't be confused with Short Elephant Trum CRT012903 from Cartoon Trax Volume 1, which is a low pitched version of the third trumpet. Links: https://soundeffects.fandom.com/wiki/Hollywoodedge,_Elephant_Trumpeting_PE024801#Audio_Samples