Euroclassic Notturno is a six-hour radio sequence of classical music recordings assembled by BBC Radio from material supplied by members of the European Broadcasting Union (EBU) and distributed, via the EBU's Euroradio network, to a number of these broadcasters for use in their overnight classical music schedules.
[1] Supplied by the BBC on a commercial basis, the service claims to provide broadcasters with a less expensive alternative to local origination of overnight classical-music programming.
[1] The sequence is put together by a small BBC team in London and Salford, and gaps are provided in the schedule to allow for local origination of explanatory material in each broadcaster's national language (written programme notes in English are supplied by the BBC some weeks in advance), top-of-the-hour news summaries, etc.
The service is streamed from Broadcasting House in London between 0:00 and 6:00 Central European Time seven days a week, though actual transmission times may be shifted locally – the BBC itself, for instance, broadcasts its own version (which goes out under the title Through the Night) between 0:30 and 6:30.
[3] As transmission is unattended the playout servers are duplicated to provide resilience, although the service has, in fact, run reliably since 1998.