Sia Furler is a/an MusicianMusician has example: tobyMac
[Human]: Sia Furler is someone I am not at all familiar with. Is there any info you can share with me about Sia Furler? [Assistant]: Sia Furler is a singer-songwriter and a musician. [Human]: A Musician? I have never heard about! Talking of musicians, can you please give me some examples of musicians? 
Well, Bill Gates comes to mind. He could play every instrument supposedly.