No sound but menu's music

When I got Minecraft 1.9, what I expected to happen was to have normal sounds.
What actually happened was that I couldn't hear anything but the menu's music, even if I had both the game's and pc sound options to 100%.
I tested it to older versions of Minecraft but there was not such a problem.
Steps to Reproduce:
Every time the game is opened, music is heard, nothing else.
When a new world is opened, everything is muted, even in 100% sound.
I would be thankful if the problem is solved.