I usually watch one or two videos a day with my 10 month old baby, they show someone playing the piano and the notes "falling" into the keyboard, guitar hero like, this is a sample (that one is the most vivid, other pieces are more quiet).

He seems to enjoy it (and gets a bit sleepy), but I'm concerned that it may be dangerous in some way (for his eyes, his brain, etc).

More info:

• 15 inch led notebook screen (very low brightness)
• 80-90 cm distance to screen
• volume at half (50-56 in windows volume scale, notebook speakers)
• usually in the morning

Question, is this safe?