Vivaldi's or Corelli's app for iPhone and iPad

Arcangelo Corelli (17 February 1653 – 8 January 1713) was an Italian violinist and composer of Baroque music. Corelli was born at Fusignano. His master on the violin was Giovanni Battista Bassani, while Matteo Simonelli, the well-known singer of the popes chapel, taught him composition.
He gained his first major success in Paris at the age of nineteen, and to this he owed his European reputation. From Paris, Corelli went to Germany. In 1681 he was in the service of the electoral prince of Bavaria; between 1680 and 1685 he spent a considerable time in the house of his friend and fellow violinist-composer Cristiano Farinelli.
In 1685 Corelli was in Rome, where he led the festival performances of music for Queen Christina of Sweden; he was also a favorite of Cardinal Pietro Ottoboni, grandnephew of another Cardinal Pietro Ottoboni, who in 1689 became Pope Alexander VIII. From 1689 to 1690 he was in Modena; the Duke of Modena was generous to him. In 1708 he returned to Rome, living in the palace of Cardinal Ottoboni. His visit to Naples, at the invitation of the king, took place in the same year.
His compositions are distinguished by a beautiful flow of melody and by a mannerly treatment of the accompanying parts, which he is justly said to have liberated from the strict rules of counterpoint.
*******************************************************************
Antonio Lucio Vivaldi (4 March 1678 – 28 July 1741), ("The Red Priest") because of his red hair, was an Italian Baroque composer, priest, and virtuoso violinist, born in Venice. Vivaldi is recognized as one of the greatest Baroque composers, and his influence during his lifetime was widespread over Europe. Vivaldi is known mainly for composing instrumental concertos, especially for the violin, as well as sacred choral works and over 40 operas.
Many of his compositions were written for the female music ensemble of the Ospedale della Pietà, a home for abandoned children where Vivaldi worked from 1703 to 1715 and from 1723 to 1740. Vivaldi also had some success with his operas in Venice, Mantua and Vienna. After meeting the Emperor Charles VI, Vivaldi moved to Vienna hoping for preferment. The Emperor died soon after Vivaldis arrival, and the composer died a pauper, without a steady source of income.
Vivaldi ranks among the most popular and widely recorded Baroque composers.
*******************************************************************
This app presents 24 musical puzzles. It plays 24 violin compositions and challanges the operator to guess the composer: Vivaldi or Corelli.
In addition to its entertaining, the operator can enjoy beautiful music for over 2 hours.