In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.

Sentence1: Drake loved to sing songs in the mirror. Sentence2: He hoped that one day he would be a great singer. Sentence3: He practiced really hard, using a hairbrush as a pretend microphone. Sentence4: A video of him was taken by his mum of him doing this. Sentence5: The video went viral and Drake's talent was spotted online.
Mum, Drake