To have a proper house party you must NOT be too house proud. Sofa stains will occur, glasses will be smashed, a poor unfortunate person might not make it to the bathroom before they have to vomit. If you are the type of person who freaks out at messiness then get drunk and deal with the horror the next day.
But why is it important that we support a wide range of new music? In my opinion, the biggest challenge facing any artist or musician today is simply getting noticed. The internet has democratised music production and distribution and the barrier to entry is now so low that the web is flooded with millions of tracks and thousands of undiscovered artists. Simultaneously, there has been a global decline in the number of trusted guides or filters with sufficient audience to make any difference and without significant gatekeepers operating at mass-market scale music makers will find it harder and harder to emerge beyond their niche.