Describe the characteristics of the Angels in this artwork's The paintings.
Two paintings of angels playing musical instruments are believed to have been part of the composition that was set into the altarpiece.  These two pictures, now in the National Gallery, London, are thought to have been completed between 1490 and 1495.  One, an angel in red, is thought to be the work of Ambrogio de Predis while the angel in green is thought to be the work of a different assistant of Leonardo, perhaps Francesco Napoletano.
National Gallery Ambrogio de Predis Francesco Napoletano