Lake Chargoggagoggmanchauggagoggchaubunagungamaugg is the name of a lake in the town of Webster, Massachusetts, near Connecticut. It is also known as Webster Lake. The 45-letter name is the longest name for a place in the United States and 6th longest in the world.
Singing along with music is a very good way to practice your English pronunciation. Here is a large collection of songson a website called esl-bits.net.Many of the songs are slow, and easy to sing with. Each song has a separate page, with the music and words (lyrics), so that you can listen and sing too.
Note: On some smartphones, you may have to close the music window so you can see the words.