Complex sentence: The first is on Guglielmo Baldini, a non-existent Italian composer, and the second was on the subject of Dag Henrik Esrum-Hellerup, who purportedly composed a small amount of music for flute.
Split into simpler sentences: The first is on Guglielmo Baldini, a non-existent Italian composer. The second was on the subject of Dag Henrik Esrum-Hellerup, who purportedly composed a small amount of music for flute.