Why do sometimes, when someone is singing that the audience claps along in a strange rythm?
114348
Some people clap on the beat, and some people clap on the off-beat.  I'm guessing you're calling the off-beat "strange rhythm".  I heard that back in the days of segregation, when people would play concerts to segregated audiences, the performers on stage would notice that the white side clapped on the beat and the black side clapped on the off-beat.
905635
he performs either nausea or clap hands
1063537
Yes. It's so embarrasing!! I think if everyone else is clapping then you start to join in, you feel like a tool just standing there!!!
64916
because songs get played out
1032901
The human voice used for singing.
581897
Of course!!! If I liked the music then it wouldn't matter - good music is entertainment enough...singers don't need to be humping the stage or doing backflip to keep me happy (if they need all that packed into their performance they're probably making up for something!).
1129681
My ten month old daughter started to do this a while ago - when she's happy or excited  and enthusiastic about something - it's usually accompanied by a "garrgh" sound. it's fun, they all do it.
57071
Even if the artist thanks God in their insert, that may just be a selling tactic, or they are just doing it because it is the thing to do.  Look at their lyrics, are they for God, or against Him??  If they were really born again, the Spirit would be living in them, and you would see the fruit of that in their music.  For example, if they were singing about sleeping with random people, and thinking that that was a great time, then they probably have not given their life over to the real Master.  You can tell if they are Christian by their actions.
106379
To show that she is having fun in the songs she sings
54746
Something that amuses, pleases, or diverts, especially a performance or show.
456464
sometimes its natural talent and sometimes people want to sing good so they practice and try to train there voices to sing certain things
32628
When you clap your hands, you compress the air between your palms.  That compression of air causes the load clap sound.  When a jet travels at extremely fast speeds, it compresses air in front of it and so causes the sonic boom.  The same goes with thunder.  When lightning strikes, the air around the lightning bolt is heated to very high temperatures and expands and pushes out at the surrounding air and this causes a compression against the surrounding air and you hear the violent thunder.
771035
When I'm dancing I'm shaking.
968219
you hear a noise because someone is making noise for people to laugh. you answered your own question.
105763
It depends on the religion, and what you mean by chanting, some religions chant while others repeat what the leader says sometimes in word or song which could be considered a chant, buddhist chant, wiccans chant, christians "sing praise" but generally its a set chant like Nam-myoho-renge-kyo in a form of Buddhism, or when christians reciet the lords prayer
72026
In porn movies, they do this entice the viewers to be in the moment, and for such obvious reasons, they are physically stimulated and therefore, they moan from the pleasure that they feel. Try it it's very exhillerating :-)
856707
It's either one or the other- either they aren't aware of how much the noise carries, or they're doing it on purpose.\n\nIf they aren't aware, the best solution is an anonymous note, so they aren't embarrassed.  Short & simple- "perhaps you aren't aware of how well sound carries here- I don't really know you well enough to be this involved in your love life, do you mind keeping it down?"\n\nIf they ARE aware, then the note won't make a difference.  Time then to break out the broom, and bang louder than they do.  Off-rhythm, of course!