(From https://musictales.club/article/giulio-regondi-guitar-prodigy-behind-early-romantic-repertoire-was-conned-false-parent)
Giulio Regondi was one of the most virtuosic guitarists of the early Romantic period who began earning flattering reviews from eight years of age including the praise of the violin maestro Paganini. Europe admired Regondi's exceptional technique while his emotional compositions were compared in complexity to the piano works of Franz Liszt and Charles-Valentin Alkan.

The fact that the greatest guitarist Fernando Sor has dedicated one of his pieces to a nine-year-old boy speaks of Regondi's unprecedented skill: after all, Regondi was only a child when he mastered the guitar, a rather complex instrument that required about 20 years of intensive training to form real virtuosity.

Born in 1823 in Geneva (other sources say Lyon), Regondi was raised by a man who proclaimed himself to be his father after his mother died during childbirth. Having discovered the musical talent of the boy at a very early age, the self-proclaimed father set out to raise a young prodigy who would provide him with a stable income.

The training methods were very harsh, too, with the boy being locked in a room where there was only a guitar, a collection of etudes and a stern neighbor who made sure that the child’s exercises were not interrupted.

With such intensive practice, Regondi's skill very soon made him a guitar genius that, combined with his angelic appearance and maturely developed intellect, allowed him to conquer the European stage by throwing music critics into absolute ecstasy.

For several years, the child prodigy had earned with his recitals a fortune estimated 2000 pounds with which his pseudo-father disappeared, leaving a twelve-year-old musician only five pounds. The emotional and financial crisis caused by this cynical betrayal was overcome by Regondi with the help of two people: a poetess named Madame Fauche and the father of the pianist Richard Hoffman who actually gave him parental support.

In the following years, Regondi settled in London, reinforcing his fame as a performer and composer with intensive tours in Europe, filling his repertoire with guitar interpretations of the most complex works such as Rossini’s Overture to Semiramide.

Years later, Regondi forgave his pseudo-father and, in response to a letter of help due to poor health, provided him with housing in London and maintenance.

Music is a divine act and science concerned with tones, which aids us in expressing the sentiments of the heart by means of voice and instruments.

— S.J. Savas

So he who sings well puts his soul in tune, correcting by degrees its faulty rhythm, so that at last, being truly natural and integrated, it has fear of nothing, but in peaceful freedom from all vain imaginings may apply itself with greater longing to the good things to come. For a soul rightly ordered by chanting the sacred word forgets its own afflictions and contemplates with joy the things of Christ alone.

— St. Athanasius

The French guitarist Roland Dyens (1955-2016) was an extremely talented and well loved improviser, performer, composer, and arranger for classical guitar. His compositions show a love of life and a deep understanding of the use of guitar techniques and styles.

This piece is light and fun and if you close your eyes you can imagine riding a bicycle down a scenic path on the River Seine, or an old worn Paris avenue punctuated by sweet smelling patisseries.

https://youtu.be/CfKWwJLAZbw

It is very rare that you get to hear a great classical composer playing his own music. There are no recordings of Bach, Mozart, Chopin, and most of the other composers up until the turn of the 20th century. We are spoiled in our time that many of the contemporary classical composers can cement the exact way they want their music played. Even still, we have debates over the exact way and tempo that the majority of music through our history has been played.

So, here is Fritz Kreisler playing one of his short pieces, Schön Rosmarin (Lovely Rosemary), part of a set of three Viennese Dances (Alt-Wiener Tanzweisen).
https://youtu.be/RTNeHzzF8i8