【推荐1】During the 1800s, African Americans worked long days in the fields of the American South. To make the time go faster, they sang “field hollers (叫喊)” that they used to sing in Africa. After the Civil War, African American music began to take new forms. It also adapted dance music, called “jump-ups”, which had great rhythm (节奏). By the early 1900s, the guitar had become the main instrument of the blues.

Northern Mississippi, also known as the Delta, was the center of the blues tradition. By the 1920s, the Delta had many blues clubs called “juke joints”. African Americans listened and danced to music in these clubs. Some of the greatest blues singers and players performed in them.

Blues have a soulful (深情的) sound that listeners can easily recognize. The musical notes are often “bent”. This means that players change the notes slightly to give a song more strength. Whatever their origin, these bent notes most often define the blues．

Lyrics are the words of a song. Blues lyrics describe everyday life. The lyrics are often very intense and personal. They tell about sad times and hard work. They describe people who find or lose love, people who have money or wish for more, and people who feel happy or sad and lonely. The lyrics may use humor to describe life’s trials and joys. They almost always use the rhythms of everyday speech.

By the 1940s, large numbers of African Americans had left the Delta and moved north to find work. Many settled in Chicago. A new kind of blues, called “electric” or “Chicago” blues, began there. It used many of the same themes as the original blues. However, the new style of blues was played with electric guitars that “wailed” and with mouth instruments called harmonicas. The music often included a steady, strong drumbeat. The loud, intense Chicago blues was excellent dance music. Chicago blues led to the creation of a new music style: rock and roll.

【推荐1】Learn Python Programming Masterclass

Description

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【推荐3】When in Ireland, do as the Irish do. And when it comes to food and drink, be sure to try these local specialities(地方特色菜).   

(1)Baked

Definitely not a poor­man’s dish, the traditional Irish ham was coated with sugar,   dressed with cloves(丁香), then baked until crisp on the outside, tender on the inside. Generally it is served with boiled and cooked or fried potatoes. It is not everyday food, even for the well­to­do, but bargains can be had at some pub restaurants.

(2)Smoked Salmon

The most popular way to enjoy salmon is smoked, either on bread with egg, or simply on its own with a salad on the side. Farmed salmon can be rather ordinary;the flavor of wild salmon tend to be better. Unfortunately the price of wild salmon tends to be significantly higher as well.

(3)Dublin Coddle

Dubliners often eat this on Saturday nights before they go out. It is a good basic dish made of chopped and cooked with and potatoes in beef stock. It is also easy to make in quantity, and can be reheated the next day.

(4)Soup of the Day

Advertised nearly everywhere, it is usually served with bread and butter, and is a very good value for a lunchtime snack. In a typical Irish way the question, “What is the soup of the day?” will, nine times out of ten, be answered with a shrug and the word, “Vegetable.” Pot luck(家常菜) is the order of the day.