Bylina or Bylyna (Russian: были́на; pl. Russian: были́ны Byliny; Ukrainian: билина Bylyna; pl. Ukrainian: били́ни Bylyny) is a traditional East Slavic oral epic narrative poem. Byliny singers loosely utilize historical fact greatly embellished with fantasy or hyperbole to create their songs. The word Bylina is derived from the past tense of the verb “to be” (Russian: быть byt') and implies “something that was.” The term most likely originated with scholars of Russian folklore; in 1839, Sakharov, a Russian folklorist, published an anthology of Russian folklore, a section of which he titled “Byliny of the Russian People,” causing the popularization of the term. Later scholars believe that Sakharov misunderstood the word bylina in the opening of Igor’ Tale as “an ancient poem.” The folk singers of byliny called these songs stariny (Russian: старины) or starinki (Russian: старинки) meaning stories of old.

Most historians of East Slavic and Russian folklore believe that byliny as a genre arose during the Kievan period, during the tenth and eleventh century; byliny continued to be written till about the arrival of the Tatars in the thirteenth century and the destruction of the Old East Slavic civilization. Byliny incorporate elements of history from several epochs into their stories. For example, byliny singers refer to many of the enemies of the Kievan people as Tartars though the stories originally referred to other steppe peoples in conflict with Kievan Rus’. The character of Prince Vladimir refers to a generalized “epic Vladimir” rather than an allusion to a specific historical Vladimir.

Ilya Muromets (Russian: Илья́ Му́ромец; Ukrainian: Ілля́ Му́ромець, literally Elijah of Murom) is a Kievan Rus' epic hero. He is celebrated in numerous byliny (folk epic poems). Along with Dobrynya Nikitich and Alyosha Popovich he is regarded as the greatest of all the legendary bogatyrs (i.e., medieval knights-errant of Kievan Rus). (The three of them are represented together in Vasnetsov's famous painting Warriors, as illustrated below.)

Although Ilya's adventures are mostly a matter of epic fiction, he is believed to have been an historical person: a 12th century warrior and, in older age^{[clarification needed]}, a monk named Ilya Pechorsky. Ilya is beatified as a minor Saint of the Orthodox Church. His relics are preserved in the Kiev Pechersk Lavra.

According to legends, Ilya, the son of a farmer, was born in the village of Karacharovo, near Murom. He suffered serious illness in his youth and was unable to walk until the age of 33 (till then he could only lie on a Russian oven), when he was miraculously healed by two pilgrims. He was then given super-human strength by a dying knight, Svyatogor, and set out to liberate the city of Kiev from Idolishche to serve Prince Vladimir the Fair Sun (Vladimir Krasnoye Solnyshko). Along the way he single-handedly defended the city of Chernigov from nomadic invasion (possibly by Polovtsi) and was offered knighthood by the local ruler, but Ilya declined to stay. In the forests of Bryansk he then killed the forest-dwelling monster Nightingale the Robber (Solovei-Razboinik), who could murder travellers with his powerful whistle.

Vasily Sergeyevich Kalinnikov (Russian: Василий Сергеевич Калинников; January 13 [O.S. January 1] 1866 – January 11, 1901 [O.S. December 29, 1900]) was a Russian composer of two symphonies, several additional orchestral works and numerous songs, all of them imbued with characteristics of folksong. His symphonies, particularly the First, were frequently performed in the early 20th century.

His younger brother Viktor Kalinnikov (1870–1927) was also a composer, mainly of choral music.

Kalinnikov was a policeman's son. He studied at the seminary at Oryol, becoming director of the choir there at fourteen. Later he went to the Moscow Conservatory but could not afford the tuition fees. On a scholarship he went to the Moscow Philharmonic Society School, where he received bassoon and composition lessons from Alexander Ilyinsky. He played bassoon, timpani and violin in theater orchestras and supplemented his income working as a music copyist.

In 1892, Pyotr Ilyich Tchaikovsky recommended Kalinnikov to be the director of the Maly Theater, and later that same year to the Moscow Italian Theater. However, due to his worsening tuberculosis, Kalinnikov had to resign from his theater appointments and move to the warmer southern clime of the Crimea. He lived at Yalta for the rest of his life, and it was there that he wrote the main part of his music, including his two symphonies and the incidental music for Alexey Tolstoy's Tsar Boris. Exhausted, he died of tuberculosis on January 11, 1901, just before his 35th birthday.

Stefani Joanne Angelina Germanotta (/ˈstɛfəniː dʒʌrməˈnɑːtə/ STE-fə-nee jurr-mə-NAH-tə; born March 28, 1986), known by her stage name Lady Gaga, is an American singer and songwriter. Born and raised in New York City, she primarily studied at the Convent of the Sacred Heart and briefly attended New York University's Tisch School of the Arts before withdrawing to focus on her musical career. She began performing in the rock music scene of Manhattan's Lower East Side, and was signed with Streamline Records by the end of 2007. During her employment as a songwriter for the record company, her vocal abilities captured the attention of recording artist Akon, who signed her to his label Kon Live Distribution.

Lady Gaga came to prominence as a recording artist following the release of her debut album The Fame (2008), which was a critical and commercial success that topped charts around the world and included the international number-one singles "Just Dance" and "Poker Face". After embarking on the The Fame Ball Tour, she followed the album with The Fame Monster (2009), which spawned the worldwide hit singles "Bad Romance", "Telephone" and "Alejandro". The album's success allowed her to embark on the eighteen-month long Monster Ball Tour, which later became one of the highest-grossing concert tours of all time. Her most recent album Born This Way (2011) topped the charts of most major markets and generated more international chart-topping singles, including "Born This Way", "Judas" and "The Edge of Glory". Besides her musical career, she involves herself with humanitarian causes and LGBT activism.

Martina Stoessel is an Argentine actress and singer. She currently has the lead role in the Disney Channel Original Series, Violetta.

Martina Stoessel was born in Argentina, she is the daughter of the director of the Baila Conmigo Paraguay program, Alejandro Stoessel. She has a brother Fran Stoessel. Martina began her artistic training at a young age, performing studied singing, piano, musical comedy, theater and dance.

In 2011, Stoessel was responsible for voicing the Spanish version of the song «The Glow», «Tu Resplandor», which performs the original versión the singer Shannon Saunders. Song is part of the album Disney Princess: Fairy Tale Songs, in which successes are collected from different Disney animated films, as well as the unreleased track.

On March 2, 2012, Walt Disney Records and Disney Channel released the soundtrack of Celebratón, "Celebratón in Concert", a compilation that includes all the hit songs that sounded in the special year-end, which was issued by the screen Disney Channel on December 31, 2011, where Martina performs «Tu Resplandor».