child concentrate girl Headphones hear kid listen listening noise soung technology audio digital magnet magneto-optical MiniDisc music musicplayer optical orange player record recordable Recording beliefs believers ethnic hajis imam Islam listeners men mosque Muslims pillars religious sitting skull caps visiting visitors waiting worshippers attendance attendees audience communication information marquee meeting observing participants people readiness ready seated seating sharing shelter tent apple close-up closeup computer crescendo grey increase louder loudness macro sound sound intensity sound level turn up volume white members observing participation seminar seminar audience Speaker speaking taking notes earphones entertainment female fun garden grass laptop leisure lifestyle outdoors PC person portrait teenager woman young boy face photogenic Ears head