The Burj Khalifa contains escalators.
The Talking drum is an hourglass-shaped drum from West Africa , whose pitch can be regulated to mimic the tone and prosody of human speech .. hourglass-shaped drum. Hourglass drum. West Africa. West Africa. tone. tone ( linguistics ). prosody. Prosody ( linguistics ). pitch. pitch ( music ). It has two drumheads connected by leather tension cords , which allow the player to modulate the pitch of the drum by squeezing the cords between their arm and body .. pitch. pitch ( music ). A skilled player is able to play whole phrases .. Most talking drums sound like a human humming depending on the way you play .. Similar hourglass-shaped drums are found in Asia , but they are not used to mimic speech , although the idakka is used to mimic vocal music .. Asia. Asia. idakka. idakka