Does classical or other music help babies develop at infant stage? How frequently should i be playing?

Playing music to infants is definitely a good thing for their development as it stimulates their brain. There's a general belief that playing classical music will benefit the child the most and male them a genius, but that "Mozart Effect" has been debunked by several studies. http://www.scientificamerican.com/article/fact-or-fiction-babies-ex/ We usually played our son music during morning hours for an hour or so. He was super fascinated with classical music. He stopped everything he was doing as soon as it started playing. We tried rock, pop, Latino and other music styles. In most cases he listens and then returns to play. Make sure you don't turn it up too much. They hear far better at that age than we do.