It usually is.
Rossini - William Tell Overture
At the very beginning ... it is sometimes called the introduction, however, an overture lasts quite a bit longer, up to several minutes in classical music.
I believe you mean the William Tell Overture by Rossini.
ludwig van bethoveen- coriolan overture
They all are forms of classical music. But if I had to say one I think it will be the overture because as it's the beginning of an opera or sometimes a musical it can be other genres as well._______________Overture is not a structural form; it is a general name for the opening [ouvert] section of many operas. There is no formal or specific structure to an overture. Rondos and fugues, on the other hand, have formal elements that make them distinct and recognizable.
Bolero , Moonlight Sonata , The Blue Danube , Clare de Lune , William tell Overture ,
The music in "The Lone Ranger" is the "William Tell Overture" by Gioachino Rossini. This famous piece of classical music is known for its fast-paced tempo and iconic trumpet fanfare. It was originally composed as the overture to Rossini's opera "William Tell" in 1829. The use of this overture in "The Lone Ranger" has become synonymous with the character and his adventures.
Overture =)
Mendelssohn - Hebrides Overture (Fingal's Cave) (Abbado)
The introductory music is called the overture.
Fingal's Cave Overture (Hebrides Overture) by Felix Mendelssohn
William Tell Overture