A chordophone is a musical instrument that makes sound by way of a vibrating string or strings stretched between two points. It is one of the four main divisions of instruments in the original Hornbostel-Sachs scheme of musical instrument classification. Hornbostel-Sachs divides chordophones into two main groups: instruments without a resonator as an integral part of the instrument. Most western instruments fall into the second group, but the piano and harpsichord fall into the first. Hornbostel and Sachs' criterion for determining which sub-group an instrument falls into is that if the resonator can be removed without destroying the instrument it is classified as 31; the idea that the piano's casing, which acts as a resonator, could be removed without destroying the instrument, may seem odd, but if the action and strings of the piano were taken out of its box, it could still be played. This is not true of the violin, because the string passes over a bridge located on the resonator box, so removing the resonator would mean the strings had no tension.

Curt Sachs broke chordophones into four basic categories, "zithers, lutes and harps." Zithers include stick zithers such as the musical bow, tube zithers with a tube as the resonator such as the valiha, board zithers including clavichord and piano and dulcimer, long zithers including Se and Guzheng families. Lutes are stringed musical instruments that include a body and "a neck which serves both as a handle and as a means of stretching the strings beyond the body." The lute family includes not only short-necked plucked lutes such as the lute, pipa, citole, mandore and gambus and long-necked plucked lutes such as the tanbura, bağlama, veena, archlute, sitar, but bowed instruments such as the Yaylı tambur, rebab and entire family of viols and violins. The Lyre has two arms, which have a "yoke" or crossbar connecting them, strings between the crossbar and the soundboard. Sachs divided this into the box lyre such as the Greek kithara and the bowl lyre which used a bowl on its side with skin soundboard.

The harp which has strings vertical to the soundboard. What many would call string instruments are classified as chordophones. Violins, guitars and harps are examples. However, the word embraces instruments that many would hesitate to call string instruments, such as the musical bow and the piano. Electric string instruments have an electromagnetic pickup that produces a signal that can be amplified; the electric guitar is the most common example, but many other chordophones use pickups—including mandolins and the overtone koto. When a chordophone is played, the strings interact with each other. There is something that makes the sound resonate, such as the body of a guitar or violin; the strings are set into motion by either plucking, strumming, by rubbing with a bow, or by striking. Common chordophones are the banjo, double bass, guitar, lute, sitar, ukulele and violin. A 3,300-year-old stone carving of a Hittite bard playing a stringed instrument is the oldest iconographic representation of a chordophone and clay plaques from Babylonia show people playing an instrument that has a strong resemblance to the guitar, indicating a possible Babylonian origin for the guitar.

Banjo Cello Citole Clavichord Claviharp Clavinet Crwth Cuban tres Double bass Gittern Guitar Dulcimer Harp Harpsichord Hurdy-gurdy Lyre Lute Monochord Piano Psaltery Rebec Rote Sitar String drum Ukulele Veena Vielle Viol Viola Violin History of Lute-family instruments K'ni, Vietnam Bro, Vietnam Kafir harp Kanklės, Lithuania Koto, Japan Guzheng, China Yatga, Mongolia Đàn tranh, Vietnam Gayageum, Korea


Protect-A-Bed® is a manufacturer and distributor of bedding products that help protect against bed bugs and allergens. Protect-A-Bed products are available in 45 countries. Protect-A-Bed supplies mattress and pillow protectors to 7 of the 11 top bedding specialists in the United States, several of the top 100 U. S. furniture chains, all the major distributors in the pest control industry and hospitality industry. Protect-A-Bed products are sold by national retailers including J. C. Penney, Kohl’s, Sears; the company has in excess of 7,000 furniture and bedding store clients in the United States as well as serving pest control and hospitality markets with bedding protection products. Protect-A-Bed is the developer of Miracle Membrane®, a proprietary membrane, waterproof and protects against liquids, as well as the patented BugLock® with SecureSeal® and three-sided zipper system for encasements. Protect-A-Bed products are listed as Class 1 Medical Devices with the Food and Drug Administration, have received the Good Housekeeping Seal.

Protect-A-Bed’s mattress protector was developed and introduced in South Africa in 1980 under the name SnugFit. Protect-A-Bed was incorporated in 2000 to distribute unique waterproof mattress protectors in the United States. By 2003, the business had grown to revenues in excess of $3.5 million and was represented in 40 states. Early in 2004, Protect-A-Bed established operations in Chicago to further facilitate the growing distribution needs in the United States. Protect-A-Bed moved its corporate headquarters from Northbrook, Illinois to Wheeling, IL in the summer of 2011.iPhone and Android app that launched in early 2011, called Bed Bugs 101, to serve as a mobile consumer reference guide on bed bugs. In July 2011, Protect-A-Bed released an iPhone game called Bed Bug Plague, that serves as an interactive bed bug elimination game. Protect-A-Bed was acquired by SureFit Home Decor, an Alburtis, Pennsylvania-based textiles supplier, in 2018. Protect-A-Bed operates offices around the world in the United Kingdom, New Zealand, China, South Africa, Costa Rica, Nicaragua, El Salvador, Guatemala, Colombia, Panama, Indonesia, Korea, United Arab Emirates, Saudi Arabia, Qatar and the Caribbean.

The Protect-A-Bed product is represented by distributors in 45 countries across the world, including a joint venture in China, Hong Kong and Taiwan, more opening a distribution in India and Singapore. Knell, Michael J.. "Magi Seal, Protect-A-Bed distributor in venture." Furniture Today. Accessed November 2012. Perry, David. "Protect-A-Bed execs find rainbow at end of journey." Furniture Today. Accessed November 2012. Official website Protect a bed in Indonesia

Girls' Invasion

Girls' Invasion is the debut studio album by South Korean girl group Lovelyz. The album was released digitally and physically on November 17, 2014 by Woollim Label and distributed by LOEN Entertainment; the album contains nine tracks include the lead single "Candy Jelly Love". On March 3, 2015 the album was re-released as Hi~ with two new songs, including the lead single of the same name. On November 2, 2014 Woollim Entertainment announcement their first girl group Lovelyz. Woollim Entertainment release first teaser image include detail their debut; the group will have a pre-release on November 10 and a showcase on November 12 while their debut album will drop on November 17. On November 4, Lovelyz release teaser image and video for announcement their debut album name "Girls Invasion". On November 10, a pre-release track "Good Night Like Yesterday" was released and its music video starred Infinite's Sungkyu; the album preview video was released on the same day. On November 17, Lovelyz official release their debut album with title track "Candy Jelly Love".

On December 3, the group released a choreography version for "Candy Jelly Love". On February 22, 2015 Woollim Entertainment announced that Lovelyz will be released as a repackaged album on March 3 and it was confirmed that Jisoo still not participation on this promotion. Lovelyz release teaser video for new track "Hi~". On March 3, Lovelyz official release the repackaged album "Hi~"and its music video. Prior to debut, Woollim Entertainment confirmed that Seo Jisoo wouldn't participation in debut promotions due to personal issues. Lovelyz held a debut showcase on debut showcase on November 12 at the K-ART Hall in Olympic Park; the group made official debuted stage with performed "Good Night Like Yesterday" on November 13. After the album official release, the group was performed "Candy Jelly Love" on weekly music show with another track from the album. Girls' Invasion Hi~ Candy Jelly Love Hi~ "Good Night Like Yesterday" Music Video on YouTube "Candy Jelly Love" Music Video on YouTube "Hi~" Music Video on YouTube