Question: Harry Partch (June 24, 1901 - September 3, 1974) was an American composer, music theorist, and creator of musical instruments. He composed using scales of unequal intervals in just intonation, and was one of the first 20th-century composers in the West to work systematically with microtonal scales. He built custom-made instruments in these tunings on which to play his compositions, and described his theory and practice in his book Genesis of a Music (1947). Partch composed with scales dividing the octave into 43 unequal tones derived from the natural harmonic series; these scales allowed for more tones of smaller intervals than in standard Western tuning, which uses twelve equal intervals to the octave.

Partch made public his theories in his book Genesis of a Music (1947). He opens the book with an overview of music history, and argues that Western music began to suffer from the time of Bach, after which twelve-tone equal temperament was adopted to the exclusion of other tuning systems, and abstract, instrumental music became the norm. Partch sought to bring vocal music back to prominence, and adopted tunings and scales he believed more suitable to singing.  Inspired by Sensations of Tone, Hermann von Helmholtz's book on acoustics and the perception of sound, Partch based his music strictly on just intonation. He tuned his instruments using the overtone series, and extended it past the twelfth partial. This allowed for a larger number of smaller, unequal intervals than found in the Western classical music tradition's twelve-tone equal temperament. Partch's tuning is often classed as microtonality, as it allowed for intervals smaller than 100 cents, though Partch did not conceive his tuning in such a context. Instead, he saw it as a return to pre-Classical Western musical roots, in particular to the music of the ancient Greeks. By taking the principles he found in Helmholtz's book, he expanded his tuning system until it allowed for a division of the octave into 43 tones based on ratios of small integers.  Partch uses the terms Otonality and Utonality to describe chords whose pitch classes are the harmonics or subharmonics of a given fixed tone. These six-tone chords function in Partch's music much the same that the three-tone major and minor chords (or triads) do in classical music. The Otonalities are derived from the overtone series, and the Utonalities from the undertone series.

Using a quote from the above article, answer the following question: what was included in the book?
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Answer: He opens the book with an overview of music history, and argues that Western music began to suffer from the time of Bach,

Problem: Andrea Jane Corr MBE (born 17 May 1974) is an Irish musician, songwriter, and actress. Corr debuted in 1990 as the lead singer of the Celtic folk rock and pop rock group The Corrs along with her three elder siblings Caroline, Sharon, and Jim. Aside from singing lead vocals Corr plays the tin whistle, the ukulele, and the piano.

In 1990, Corr and her siblings formed a quartet called The Corrs. Their career launched in 1991 when they auditioned for the film The Commitments in which Andrea gained a speaking role as Sharon Rabbitte. John Hughes noticed the quartet when they auditioned for the movie, and agreed to become their manager. The Corrs signed with Atlantic Records in 1995 and travelled to North America to record their debut album Forgiven, Not Forgotten. The album featured six instrumental selections among its Celtic-influenced tracks. When released, it was successful in Ireland, Australia, Japan, and Spain. The album reached platinum status in the United Kingdom and Australia, and quadruple platinum in Ireland, which made it one of the most popular debuts by an Irish group.  Following on from the success of their debut album, they released Talk on Corners and In Blue in 1997 and 2000 respectively. Originally Talk on Corners met with lukewarm success, until a remix version was released, when it topped the charts in many countries, and reached platinum status in the United Kingdom and Australia. In Blue moved towards mainstream pop, placing heavy emphasis on electronic synthesisers. It was successful, and was No. 1 in its first sales week in the UK, Ireland, Australia, Germany, Switzerland, and Austria and debuted at No. 2 in France and Norway. It climbed to the top position during its second week in Sweden and Spain.  During the production of In Blue, their mother, Jean, died while waiting for a lung transplant in the Freeman Hospital in Newcastle, Britain. She was laid to rest at St. Patrick's cemetery in Dundalk. Bono, Larry Mullen, Brian Kennedy and Paul Brady were among the attendees. "No More Cry", written by Andrea and Caroline Corr for the album, was dedicated to their father hoping to help with his grief.  In 2003, Andrea recorded "Time Enough For Tears", a song written by Bono and Gavin Friday for the film In America. This track was featured on The Corrs' 2004 album Borrowed Heaven. Borrowed Heaven was dedicated to their late mother, Jean, and their father, Gerry. The band also dedicated their 2005 tribute album Home to their deceased mother. The band covered many traditional Irish songs taken from their mother's songbook to commemorate their 15 years as a band.  In an interview with Chris Evans in June 2015, Andrea confirmed that The Corrs were working on a new album and would play the BBC Radio 2 'Live in Hyde Park' festival. Their sixth studio album, White Light, was released on 27 November 2015, and was accompanied by a world tour.

how many people were in the group?

Answer with quotes:
Corr and her siblings formed a quartet called The Corrs.