Minimalist: Steve Reich, Henryk Gorecki, John Adams...
But it sounds more like you're asking for classical music that isn't overwhelming. In that case, go for chamber music - this is for any small ensemble. You might particularly like things like Mozart wind ensembles (quartets, quintets), Faure or Ravel trios or quartets (sometimes with piano), etc. There are a lot of Mozart cds "for children" that are good here too, since young children like smaller ensembles better than big orchestras.
Minimalist: Steve Reich, Henryk Gorecki, John Adams...
But it sounds more like you're asking for classical music that isn't overwhelming. In that case, go for chamber music - this is for any small ensemble. You might particularly like things like Mozart wind ensembles (quartets, quintets), Faure or Ravel trios or quartets (sometimes with piano), etc. There are a lot of Mozart cds "for children" that are good here too, since young children like smaller ensembles better than big orchestras.