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| | Reference.com/Encyclopedia/Billboard magazine |
 | | A country music version of "American Top 40" – called "American Country Countdown" – is hosted by radio personality Bob Kingsley, and has been on the air since 1973. |
 | | Currently, Billboard has many different charts with the Hot 100 and Billboard 200 being the most famous. |
 | | Billboard also has charts for the following music styles: rock, country, dance, bluegrass, jazz, classical, R and B, rap, electronic, latin, christian music and even for ringtones for cell phones. |
| www.reference.com /browse/wiki/Billboard_magazine (790 words) |
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