A number of concertos and concertante works have been written for cor anglais (English horn) and string, wind, chamber, or full orchestra. English horn concertos appeared about a century later than oboe solo pieces, mostly because until halfway through the 18th century different instruments (the , vox humana and the oboe da caccia) had the role of the tenor or alto instrument in the oboe family. The modern English horn was developed from the oboe da caccia in the 1720s, probably in Silesia. The earliest known English horn concertos were written in the 1770s, mostly by prominent oboists of the day, such as Giuseppe Ferlendis, (and his non-oboist brother Johann Michael Malzat) and . Few of these works have survived. Among the oldest extant English horn concertos are those by Josef Fiala (a