More than 30 albums from Elton John will be made available for digital download later this month, the singer said on Wednesday, marking the first time his whole catalog of more than 400 tracks will go online.

The 59-year-old, who has sold more than 200 million hard copies of records in a career spanning more than 40 years, has already released some of his more recent work online in the United States, but this will mark the first time his entire catalog is available.

John said he had wanted all his music to be online for some while but time was needed to prepare the entire catalog.

“I knew that the entire catalog — not just the hits — needed care and attention to be released in this way,” he said in a statement. “Now that it’s happening, I’m pleased for the fans’ sake.”

The catalog will be available exclusively from Apple Inc.’s iTunes service from March 26 until April 30 before being made available on other legal download services.