The Paris Conservatory was greatly influenced by the music conservatories of Naples. Mirrors can be used to produce enhanced lighting effects in greenhouses or conservatories. At present, there are universities, academies and institutes, conservatories, higher schools and higher colleges. It includes comprehensive universities, specialized universities, "senior colleges", institutes, conservatories, and military academies. The city has numerous orchestras, symphonies and performing art conservatories. Most musicologists work as instructors, lecturers or professors in colleges, universities or conservatories. Most music theorists work as instructors, lecturers or professors in colleges, universities or conservatories. Some orchestrators teach at colleges, conservatories or universities. Aspiring conductors can study at colleges, conservatories, and universities. The city also maintains a number of gardens and conservatories. Many graduates from LaGuardia continue their studies in universities or conservatories after graduation. In the 20th century, composers began to seek employment as professors in universities and conservatories. Norman received honorary doctorates from more than 30 colleges, universities, and conservatories. Many conservatories in Europe have classical accordion departments. Today, all the conservatories of music in Ukraine offer courses majoring in bandura performance.