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Fazlur Rahman Khan (Bengali: phjlur rhmaan khaan, Fozlur Rohman Khan) (3 April 1929 - 27 March 1982) was a Bangladeshi-American structural engineer and architect, who initiated important structural systems for skyscrapers. Considered the "father of tubular designs" for high-rises, Khan was also a pioneer in computer-aided design (CAD). He was the designer of the Sears Tower, since renamed Willis Tower, the tallest building in the world from 1973 until 1998, and the 100-story John Hancock Center. Khan, more than any other individual, ushered in a renaissance in skyscraper construction during the second half of the 20th century.
Khan's central innovation in skyscraper design and construction was the idea of the "tube" structural system for tall buildings, including the framed tube, trussed tube, and bundled tube variants. His "tube concept", using all the exterior wall perimeter structure of a building to simulate a thin-walled tube, revolutionized tall building design. Most buildings over 40 stories constructed since the 1960s now use a tube design derived from Khan's structural engineering principles.  Lateral loads (horizontal forces) such as wind forces, seismic forces, etc., begin to dominate the structural system and take on increasing importance in the overall building system as the building height increases. Wind forces become very substantial, and forces caused by earthquakes, etc. are important as well. The tubular designs resist such forces for tall buildings. Tube structures are stiff and have significant advantages over other framing systems. They not only make the buildings structurally stronger and more efficient, but also significantly reduce the structural material requirements. The reduction of material makes the buildings economically more efficient and reduces environmental impact. The tubular designs enable buildings to reach even greater heights. Tubular systems allow greater interior space and further enable buildings to take on various shapes, offering added freedom to architects. These new designs opened an economic door for contractors, engineers, architects, and investors, providing vast amounts of real estate space on minimal plots of land. Khan was among a group of engineers who encouraged a rebirth in skyscraper construction after a hiatus of over thirty years.  The tubular systems have yet to reach their limit when it comes to height. Another important feature of the tubular systems is that buildings can be constructed using steel or reinforced concrete, or a composite of the two, to reach greater heights. Khan pioneered the use of lightweight concrete for high-rise buildings, at a time when reinforced concrete was used for mostly low-rise construction of only a few stories in height. Most of Khan's designs were conceived considering pre-fabrication and repetition of components so projects could be quickly built with minimal errors.  The population explosion, starting with the baby boom of the 1950s, created widespread concern about the amount of available living space, which Khan solved by building upward. More than any other 20th-century engineer, Fazlur Rahman Khan made it possible for people to live and work in "cities in the sky." Mark Sarkisian (Director of Structural and Seismic Engineering at Skidmore, Owings & Merrill) said, "Khan was a visionary who transformed skyscrapers into sky cities while staying firmly grounded in the fundamentals of engineering."

Are there any other interesting aspects about this article?

Khan's central innovation in skyscraper design and construction was the idea of the "tube" structural system for tall buildings,



Answer the question at the end by quoting:

George Benson (born March 22, 1943) is an American musician, guitarist, and singer-songwriter. He began his professional career at the age of 21 as a jazz guitarist. Benson uses a rest-stroke picking technique similar to that of gypsy jazz players such as Django Reinhardt. A former child prodigy, Benson first came to prominence in the 1960s, playing soul jazz with Jack McDuff and others.
By the mid-to-late 1970s, as he recorded for Warner Bros. Records, a whole new audience began to discover Benson. With the 1976 release Breezin', Benson sang a lead vocal on the track "This Masquerade" (notable also for the lush, romantic piano intro and solo by Jorge Dalto), which became a huge pop hit and won a Grammy Award for Record of the Year. (He had sung vocals infrequently on albums earlier in his career, notably his rendition of "Here Comes the Sun" on the Other Side of Abbey Road album.) The rest of the album is instrumental, including his rendition of the 1975 Jose Feliciano composition "Affirmation".  In 1976, Benson toured with soul singer Minnie Riperton, who had been diagnosed with terminal breast cancer earlier that year and, in addition, appeared as a guitarist and backup vocalist on Stevie Wonder's song "Another Star" from Wonder's album Songs in the Key of Life.  During the same year, 1976, the top selling album 'Breezin' was released on the Warner Brothers label featuring the Bobby Womack penned title track and the Leon Russell penned This Masquerade which is now a jazz standard. Both tracks won Grammy awards that year and the LP put Benson into the musical limelight both in the USA and in Europe. Ironically, Benson had been discouraged up until this time, from using his singing skills, mainly as the company decision makers felt he wasn't competent enough vocally, and he should stick to playing the guitar. It was here that he clearly proved them wrong.  He also recorded the original version of "The Greatest Love of All" for the 1977 Muhammad Ali bio-pic, The Greatest, which was later covered by Whitney Houston as "Greatest Love of All". During this time Benson recorded with the German conductor Claus Ogerman. The live take of "On Broadway", recorded a few months later from the 1978 release Weekend in L.A., also won a Grammy. He has worked with Freddie Hubbard on a number of his albums throughout the 1960s, 1970s and 1980s.  The Qwest record label (a subsidiary of Warner Bros., run by Quincy Jones) released Benson's breakthrough pop album Give Me The Night, produced by Jones. Benson made it into the pop and R&B top ten with the song "Give Me the Night" (written by former Heatwave keyboardist Rod Temperton). He had many hit singles such as "Love All the Hurt Away", "Turn Your Love Around", "Inside Love", "Lady Love Me", "20/20", "Shiver", "Kisses in the Moonlight". More importantly, Quincy Jones encouraged Benson to search his roots for further vocal inspiration, and he rediscovered his love for Nat Cole, Ray Charles and Donny Hathaway in the process, influencing a string of further vocal albums into the 1990s. Despite returning to his jazz and guitar playing most recently, this theme was reflected again much later in Benson's 2000 release Absolute Benson, featuring a cover of one of Hathaway's most notable songs, "The Ghetto". Benson accumulated three other platinum LPs and two gold albums.

Were there any successful singles released from Breezin'?
Hathaway's most notable songs, "The Ghetto". Benson accumulated three other platinum LPs and two gold albums.