The letter "R" is difficult to pronounce for lots of people, even native speakers. Sigrid shows us how "R" sounds in different kinds of words.

The letter "S" has a couple of different sounds. It's a very important letter because it's used to form the plural of many nouns as well as the third person singular of verbs.

"U" is an interesting vowel, and has a few different sounds. It can even sound like the consonant "Y," and combines with other vowels to make new sounds.

"T" is for "tricky." Depending on what letters "T" is combined with or next to, it is pronounced differently. Sigrid explains and gives some examples.

"V" is a voiced consonant. "Voice" starts with "V." We make the sound with the upper teeth lightly touching the lower lip, like "F" but with the voice, too. It vibrates. The verb "to vibrate" also starts with "V." That should make it easy to remember.

"W" is a consonant, but it is very vowel-like and is considered a "semi-vowel." "W" is featured in plenty of important words, and it combines with other letters to make some new sounds.

"X" is a special letter in that we often use it by itself. It's useful in a lot of situations. In the middle of a word, however, it can be pronounced in a few different ways.

"Y" is a tricky letter because it's both a consonant and a vowel. As a vowel, it has different sounds. Don't worry. But hey, maybe keep your eye on the "Y." Don't let it fly away.

Sigrid finishes the alphabet with "Z," covering words like "zone" and "zebra," but also the useful suffix "-ize."

In this short scene, a deeply star-struck Sheldon meets one of his heroes, the great actor James Earl Jones, whom Sheldon knows as the voice of Darth Vader in the Star Wars movies.

English band The Cure is maybe best known for "Lovesong" from their eighth studio album 'Disintegration' in 1989. Here is the original video feature frontman Robert Smith.

"Every Breath You Take" is a song recorded by the London-based band the Police. It was written by Sting and was nominated that year for several Grammy awards. Enjoy!

Catch up on winter vocabulary with Sigrid. It's also a great chance to practice words with "W," since there are plenty associated with winter.

Learn and practice the days of the week in English with this fun kids’ video from the American alternative band They Might Be Giants’ album Here Come the 123s!

The band They Might Be Giants constructed a song with lyrics consisting just of the names of countries, so this is a great chance to brush up on the English forms of place names. But one hint: West Xylophone is, unfortunately not really the name of an actual country!