### Clue: Maestro presenting opera at home in Ulster (9)
### Answer: TOSCANINI 
 ### Explanation: Definition: Maestro
 TOSCA(an opera by Puccini) + [IN(at home/in lockdown) **contained in**(in) NI(abbrev. for Northern Ireland, which is in Ulster, the traditional province in northern Ireland)].
Answer: Arturo, Italian musician and conductor.