Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: A Canadian senior citizen is making waves - and gaining tons of fans - as an unlikely grindcore star, thanks to her impressively-ferocious vocals which she showcases as a back-up singer for her son’s band. The 67-year-old sensation, who has been dubbed 'The Grindmother', first began doing back-up vocals for the band, Corrupt Leaders, last year, and has now released her first single, At Any Cost, for the group, which is fronted by her son, who goes by the name Rain Forest. In the video, she's seen head-banging and screaming into the microphone as she belts out the song's politically-inspired lyrics.The adorable senior citizen first began doing back-up vocals for her son's band, Corrupt Leaders, last yearShe has now released her own single, At Any Cost, along with a music video which sees her head-banging and screaming into the micOzzy Osbourne caught wind of her video and tweeted it to his followers 
 Question:His band is also selling T-shirts with her picture and the words: 'Listen to _'.

The Grindmother