Here is a brief list of websites where you can find information about venues and forthcoming classical music, ballet and Zarzuela concerts.
Auditorio Nacional de Música – comes under the control of the Ministry of Culture. Two concert halls, from which the National Orchestra and Choir of Spain and the Youth National Orchestra perform, can be found within its Príncipe de Vergara building.
Teatro de la Zarzuela – this theatre, founded in the last century, has aprogramme of Zarzuela, opera and dance throughout the year.
Teatro Real – in this beautiful opera house you will find performances of opera, ballet and classical music performances.
Fundación Juan March – private arts/sciences foundation where you can listen to concerts throughout the week and at weekends.
Teatro Monumental – the Orquesta y Coro de la RTVE (Orchestra and Choir of the state TV channel) play out of this theatre, usually on Thursdays and Fridays.
Teatro Madrid – based in the area of Barrio del Pilar, this theatre puts on ballet, productions of zarzuela and drama. October through to November various productions for the Festival de Otoño (Autumn Festival) will be held here.
Real Conservatorio Superior de Música -The Royal Conservatory for Music was founded 1830 and apart from imparting music courses, they also put on concerts. You will need to email them for details of the programme as the website isn’t up-to-date).
Círculo de Bellas Artes – this organisation puts on a wide range of cultural activities, including music, theatre, dance, art exhibitions, literary events, to name but a few. Music events cn be found under “Actividades > Música”.
Centro para la Difusión de la Música Contemporánea – aims to “fill the increasing gap in the circulation of contemporary music and to create a more favourable atmosphere for new composition”. For details of concerts select “Próximas Actividades” (the English version isn’t up-to-date.
Auditorio Conde Duque – the Auditorium of the Centro Cultural de Conde Duque puts on a number of concerts throughout the year – many of them free. Simply select “Auditorio” from the website menu.