By 1985 there were enough professional players of Baroque instruments in England for the LBS choir to be able to perform the St Matthew Passion with a complete orchestra of period instruments in Wells Cathedral and later in 1987 at Westminster Abbey By 1985 the development of Baroque instruments and the technique of the players was such that the LBS choir was able to perform the St Matthew Passion with a complete orchestra of period instruments and this they did for the opening concert of the 1985 Bath International Music Festival in Wells Cathedral and later in 1987 at Westminster Abbey , the latter being the last time Steinitz conducted the work .