The Concert of Europe (Russian: Система Европейского концерта, Sistema Evropejskogo koncerta), also known as the Congress System after the Congress of Vienna, was the balance of power that existed in Europe from the end of the Napoleonic Wars (1815) to the outbreak of World War I (1914), albeit with major alterations after the revolutions of 1848. Its founding powers were Austria, Prussia, the Russian Empire and the United Kingdom, the members of the Quadruple Alliance responsible for the downfall of the First French Empire. In time France was established as a fifth member of the concert. At first, the leading personalities of the system were British foreign secretary Lord Castlereagh, Austrian chancellor Klemens von Metternich and Russian tsar Alexander I. Charles Maurice de Talleyrand-Périgord of France was largely responsible for quickly returning that country to its place alongside the other major powers in international diplomacy.

The age of the Concert is sometimes known as the Age of Metternich, due to the influence of the Austrian chancellor's conservatism and the dominance of Austria within the German Confederation, or as the European Restoration, because of the reactionary efforts of the Congress of Vienna to restore Europe to its state before the French Revolution. The rise of nationalism, the unification of Germany and the Risorgimento in Italy, and the Eastern Question were among the factors which brought an end to the Concert's effectiveness. Among the meetings of the Great Powers during this period were: Aix-la-Chappelle (1818), Carlsbad (1819), Verona (1822), London (1832), Berlin (1878).

Jean Michel André Jarre (born 24 August 1948 in Lyon) is a French composer, performer and music producer. He is a pioneer in the electronic, ambient and New Age genres, and known as an organiser of outdoor spectacles of his music featuring lights, laser displays, and fireworks.

Jarre was raised in Lyon by his mother and grandparents, and trained on the piano. From an early age he was introduced to a variety of art forms, including those of street performers, jazz musicians, and the artist Pierre Soulages. He played guitar in a band, but his musical style was perhaps most heavily influenced by Pierre Schaeffer, a pioneer of musique concrète at the Groupe de Recherches Musicales.

His first mainstream success was the 1976 album Oxygène. Recorded in a makeshift studio at his home, the album sold an estimated 12 million copies. Oxygène was followed in 1978 by Équinoxe, and in 1979 Jarre performed to a record-breaking audience of more than a million people at the Place de la Concorde, a record he has since broken three times. More albums were to follow, but his 1979 concert served as a blueprint for his future performances around the world. Several of his albums have been released to coincide with large-scale outdoor events, and he is now perhaps as well known as a performer as a musician.

Amy Jade Winehouse (14 September 1983 – 23 July 2011) was an English singer and songwriter known for her powerful deep contralto vocals and her eclectic mix of musical genres including R&B, soul and jazz. Winehouse's 2003 debut album, Frank, was critically successful in the UK and was nominated for the Mercury Prize. Her 2006 follow-up album, Back to Black, led to six Grammy Award nominations and five wins, tying the then record for the most wins by a female artist in a single night, and made Winehouse the first British female to win five Grammys, including three of the "Big Four": Best New Artist, Record of the Year and Song of the Year.

In 2007 she won a Brit Award for Best British Female Artist; she had also been nominated for Best British Album. She won the Ivor Novello Award three times: once in 2004 for Best Contemporary Song (musically and lyrically) for "Stronger Than Me", once in 2007 for Best Contemporary Song for "Rehab", and once in 2008 for Best Song Musically and Lyrically for "Love Is a Losing Game".

Maria Ilieva is a Bulgarian singer and producer recognized by some as the most successful female vocal artist of the contemporary Bulgarian music scene. Judge on the first season of X factor Bulgaria.

Maria Ilieva was born in Veliko Tarnovo, Bulgaria, in a family of renowned musicians. Her mother, Vanya Moneva, is the choir-master of the Cosmic Voices from Bulgaria choir and her father, Krasimir Iliev, is the conductor of Sofia Wind Orchestra. Trained pianist since the age of five, she developed her vocal skills as a member of the “Petko Stainov” Choir Academy.

Ilieva graduated from the elite Sofia High School of Mathematics. She proceeded to receive a Master’s degree in Insurance and a Master’s degree in International Relations. Her career as a performing vocal artist started in the late 90’s, when she was the lead vocalist of the Kaffe Band – best known abroad for representing Bulgaria at the 2005 Eurovision Song Contest.

The launch of Maria Ilieva’s solo career is marked by the release of her first single "Moon Dream" in the summer of 2001. The album (also titled Moon Dream) was duly released later on in the year, having been described by a Bulgarian website as a phenomenon in BG pop music. Singles released from the album ("Moon Dream", "Nothing") have gone straight to No.1 in all leading Bulgarian radio and television pop charts,^{[citation needed]} while "Alright" (produced in collaboration with the avant-garde soul-funk band TE), shot to fame by staying on the top of Bulgarian Top 100 chart for an unprecedented 13 successive weeks.

Johanna Maria Lind (6 October 1820 – 2 November 1887), better known as Jenny Lind, was a Swedish opera singer, often known as the "Swedish Nightingale". One of the most highly regarded singers of the 19th century, she is known for her performances in soprano roles in opera in Sweden and across Europe, and for an extraordinarily popular concert tour of America beginning in 1850. She was a member of the Royal Swedish Academy of Music from 1840.

Lind became famous after her performance in Der Freischütz in Sweden in 1838. Within a few years, she had suffered vocal damage, but the singing teacher Manuel García saved her voice. She was in great demand in opera roles throughout Sweden and northern Europe during the 1840s, becoming the protégée of Felix Mendelssohn. After two acclaimed seasons in London, she announced her retirement from opera at the age of 29.

In 1850, Lind went to America at the invitation of the showman P. T. Barnum. She gave 93 large-scale concerts for him and then continued to tour under her own management. She earned more than $350,000 from these concerts, donating the proceeds to charities, principally the endowment of free schools in Sweden. With her new husband, Otto Goldschmidt, she returned to Europe in 1852 where she had three children and gave occasional concerts over the next two decades, settling in England in 1855. From 1882, for some years, she was a professor of singing at the Royal College of Music in London.