Various types of mutes can be placed in or over the bell, which decreases volume and changes timbre. Of all brass instruments, trumpets have the widest selection of mutes: common mutes include the straight mute, cup mute, harmon mute (wah-wah or wow-wow mute, among other names), plunger, bucket mute, and practice mute. When the type of mute is not specified, players generally use a straight mute, the most common type. Jazz, commercial, and show band musicians often use a wider range of mutes than their classical counterparts, and many mutes were invented for jazz orchestrators.