Luke speaks with musician and voice actor Karen Jacobsen as this week's Remarkable Australian. Karen is an accomplished musician, and most famously the voice of "Siri" as well as popular GPS navigation systems.

<p>Luke speaks with musician and voice actor Karen Jacobsen as this week's Remarkable Australian. Karen is an accomplished musician, and most famously the voice of "Siri" as well as popular GPS navigation systems.</p>

Weekends with Luke Grant, 9am to 1pm every Saturday and Sunday on 2GB.

<p>Weekends with Luke Grant, 9am to 1pm every Saturday and Sunday on 2GB.</p>