Once "I Think I Love You"—the first single released by The Partridge Family pop group—became a hit, Cassidy began work on solo albums. Within the first year, he had produced his own single, a cover of The Association's "Cherish" (from the album of the same title); the song reached number nine in the United States, number two in the United Kingdom (a double A-side with "Could It Be Forever"), and number one in Australia and New Zealand. He began tours that featured Partridge tunes and his own hits. Cassidy achieved far greater solo chart success in the UK than in his native America, including a cover of The Young Rascals' "How Can I Be Sure" and the double A-side single "Daydreamer" / "The Puppy Song" – a UK number one which failed to chart in the States. In Britain, Cassidy the solo star remains best known for "Daydreamer", "How Can I Be Sure" and "Could It Be Forever" (UK number 2/US number 37), all released during his 1972–73 solo chart peak. Though he wanted to become a respected rock musician along the lines of Mick Jagger, his channel to stardom launched him into the ranks of teen idol, a brand he loathed until much later in life, when he managed to come to terms with his pop idol beginnings. Ten albums by The Partridge Family and five solo albums by Cassidy were produced during the series, with most selling more than a million copies each.