Difference between a crowded place and a silent place for practicing music,especially my singing

In a crowded place for example in college and in a hotel where other people are sitting in the lounge,I  can still manage to rehearse my singing without even having any problem for my utilisation of my time, However the important thing is too not sing too loudly or crank up the volume off your laptop,phone or IPad.When I rehearse,I don't sing loudly and I put the beat soft,Even if I can hear other songs /sounds or noises in the corridors,I can still keep track of the karoake version of the songs whichever I am singing for the recital,as it is very important,at home when I am singing alone in my room or for my family,that time I can sing loudly,properly and confidently as it is very important and especially for the preparation of the recital,I am now in Ambleside in Lake District for my holiday,and when I get back,I will rehearse everything in a proper manner and confidently as to get an Idea as to how I will perform in the recital.All is good.