Piano

The piano (Italian pronunciation: [ˈpjaːno]; an abbreviation of pianoforte [pjanoˈfɔrte]) is a musical instrument played using a keyboard. It is widely employed in classical, jazz, traditional and popular music for solo and ensemble performances, accompaniment, and for composing and rehearsal. Although the piano is not portable and often expensive, its versatility and ubiquity have made it one of the world's most familiar musical instruments.

An acoustic piano usually has a protective wooden case surrounding the soundboard and metal strings, and a row of 88 black and white keys (52 white, 36 black). The strings are sounded when the keys are pressed, and silenced when the keys are released. The note can be sustained, even when the keys are released, by the use of pedals.

Pressing a key on the piano's keyboard causes a padded (often with felt) hammer to strike strings. The hammer rebounds, and the strings continue to vibrate at their resonant frequency. These vibrations are transmitted through a bridge to a soundboard that amplifies by more efficiently coupling the acoustic energy to the air. When the key is released, a damper stops the strings' vibration, ending the sound. Although an acoustic piano has strings, it is usually classified as a percussion instrument because the strings are struck rather than plucked (as with a harpsichord or spinet); in the Hornbostel-Sachs system of instrument classification, pianos are considered chordophones. With technological advances, electric, electronic, and digital pianos have also been developed.

Dynamics (music)

In music, dynamics are instructions in musical notation to the performer about hearing the loudness of a note or phrase. More generally, dynamics may also include other aspects of the execution of a given piece.

Relative loudness

The two basic dynamic indications in music are:

More subtle degrees of loudness or softness are indicated by:

Beyond f and p, there are also

And so on.

Some pieces contain dynamic designations with more than three f's or p's. In Holst's The Planets, ffff occurs twice in Mars and once in Uranus often punctuated by organ and fff occurs several times throughout the work. It also appears in Heitor Villa-Lobos' Bachianas Brasileiras No. 4 (Prelude), and in Liszt's Fantasy and Fugue on the chorale "Ad nos, ad salutarem undam". The Norman Dello Joio Suite for Piano ends with a crescendo to a ffff, and Tchaikovsky indicated a bassoon solo pppppp in his Pathétique Symphony and ffff in passages of his 1812 Overture and the 2nd movement of his Fifth Symphony.

Piano (Wynton Kelly album)

Piano, also released as Whisper Not, is an album by jazz pianist Wynton Kelly released on the Riverside label featuring performances by Kelly with Kenny Burrell, Paul Chambers, and Philly Joe Jones recorded in 1958.

Reception

The Allmusic review by Scott Yanow states "Kelly became a major influence on pianists of the 1960s and 1970s and one can hear the genesis of many other players in these swinging performances".

Track listing

Personnel

References

DNA

Deoxyribonucleic acid (ⁱ/diˈɒksiˌraɪboʊnjʊˌkliːɪk, -ˌkleɪɪk/;DNA) is a molecule that carries most of the genetic instructions used in the development, functioning and reproduction of all known living organisms and many viruses. DNA is a nucleic acid; alongside proteins and carbohydrates, nucleic acids compose the three major macromolecules essential for all known forms of life. Most DNA molecules consist of two biopolymer strands coiled around each other to form a double helix. The two DNA strands are known as polynucleotides since they are composed of simpler units called nucleotides. Each nucleotide is composed of a nitrogen-containing nucleobase—either cytosine (C), guanine (G), adenine (A), or thymine (T)—as well as a monosaccharide sugar called deoxyribose and a phosphate group. The nucleotides are joined to one another in a chain by covalent bonds between the sugar of one nucleotide and the phosphate of the next, resulting in an alternating sugar-phosphate backbone. According to base pairing rules (A with T, and C with G), hydrogen bonds bind the nitrogenous bases of the two separate polynucleotide strands to make double-stranded DNA. The total amount of related DNA base pairs on Earth is estimated at 5.0 x 10³⁷, and weighs 50 billion tonnes. In comparison, the total mass of the biosphere has been estimated to be as much as 4 TtC (trillion tons of carbon).

DNA²

DNA² (Japanese: D・N・A² ～何処かで失くしたあいつのアイツ～, Hepburn: Dī En Ei Tsū: Dokoka de Nakushita Aitsu no Aitsu) is a science fiction manga series written and illustrated by Masakazu Katsura. It was serialized across Shueisha's Weekly Shōnen Jump magazine between 1993 and 1994, spanning a total of five tankōbon volumes.

DNA² was adapted into a 12-episode anime television series which ran on Nippon Television from October 7, 1994 to December 23, 1994. This was followed by a three-episode anime original video animation (OVA) in 1995. Produced by Madhouse and Studio Deen, the anime series was directed by Jun'ichi Sakata, whereas the character designer and animation director for the series was Kumiko Takahashi. DNA² has been broadcast in Japan by Animax, which has also aired the series across its respective networks worldwide, including its English-language networks in Southeast Asia and South Asia. All 15 episodes were licensed in North America by Central Park Media until their closing in 2009. The five volumes and box set are out-of-print. Discotek Media has since re-licensed the series for a DVD release in 2014.

DNA2.0

DNA2.0 provides products and services for life science and Synthetic biology research. DNA2.0 also provides free access to research tools such as Gene Designer, DNA Atlas and a gRNA designer.

The company

DNA2.0 was founded in 2003, in Menlo Park, California. The company is privately held and continues to have all research, development and production in Menlo Park, California. It began and continues as a gene synthesis and protein engineering provider to academia, government and the pharmaceutical, chemical, agricultural and biotechnology industries. Gene Synthesis rapidly replaced molecular cloning for many academic and corporate labs, as "foundries for the biotechnology age" allowing made-to-order genes for biological research. DNA2.0 was featured on the PBS show Nova ScienceNow to show how genes are created synthetically in a lab. In 2008, the company supplied some of the DNA stretches used to create a synthetic bacterial genome.Dan Rather Reports included DNA2.0 in their episode on Synthetic Biology and how it is solving "some of the most important problems facing the world." In 2009, The Scientist named the codon design algorithms (now tradmarked as GeneGPS) developed by DNA2.0 as one of the Top 10 Innovations of the year for Life Sciences. DNA2.0 developed the Electra Vector System, a universal cloning system that utilizes the type IIS restriction enzyme SapI and T4 DNA ligase in a single-tube reaction. DNA2.0 has made some molecular components, such as synthetic fluorescent proteins, available in open-access collections of DNA parts (BioBricks Foundation). DNA2.0 is a founding member of the International Gene Synthesis Consortium (IGSC) to promote biosecurity in the gene-synthesis industry. There are over 1,100 published scientific articles using DNA2.0 products and/or services, of which 43 include company employees as an author(s).