Hi rar
Thanks for extra info. It makes giving advice a bit easier. I think that the problem and issue here is the whole setup including amplification, mixing and type of recording device used. It is not just a mic issue. The only way to get a clear recording and eliminate some of the external noise is to use a dynamic cardiod mic for vocals and seperate mic or mics for the orchestra depending on its size but to do this you will also need a mixer. To be honest with you on your very low budget this wont be easy. Any mic no matter how expensive will always pick up external noise eg applause etc. Even a basic mixer all by itself will put you way over budget Shure do a range of mics for all applications but each mic will be about the top end of your budget. The quality of the final product however will depend very much on the type of recording device and mixing desk used not just the mics. There is little point in spending a lot on mics just record on a cheap tape recorder or similar type thing. Hiring might be a better and affordable option. If this concert is already "amplified" and going into a mixing desk then it may be possible just to plug your recorder straight in to the mixer most have this facility reducing the need for a mic and getting the best quality sound. Ask your sis to check this possibility out with the guy operating the sound.