Maria Teresa Agnesi was an Italian composer. Though she was most famous for her compositions, she was also an accomplished harpsichordist and singer, and the majority of her surviving compositions were written for keyboard, the voice, or both. She was born in Milan to Pietro Agnesi, an overbearing man in the lesser nobility. He provided early education for both Maria Teresa and her more famous older sister, Maria Gaetana, a mathematics and language prodigy who lectured and debated all over Europe while her sister performed. Maria Teresa was married to Pier Antonio Pinottini on June 13, 1752, and they settled in a district populated by intellects and artists, but eventually suffered severe financial ruin. Pinottini died not too long afterwards.