The 1980s are likely to see a continuation of the trend of the past 25 years of an expansion in the quantity, and improvement in the quality, of public music making. Concert halls are usually prestigious buildings, and often no expense is spared to make the acoustics as good as possible, but the design problems are still formidable. In the 1980s some considerable help in design may be expected from scale models and computer simulation. And electronic aids for acoustics may become more common. The problems of multi-purpose halls are rather different; the conflicting acoustic requirements for speech and for music have to be reconciled, and cost is important. Here electronic techniques may play a considerable part in the future.