LONDON (AP) — Samuel Smith spent years writing songs with a guitar in his hands. Now, the London-based singer-songwriter is using artificial intelligence tools to help him continue making Americana music after Parkinson’s disease largely took away his ability to play guitar. Smith, who was diagnosed with the progressive neurological disorder in 2020, recently released his second album, “The Art of Letting Go.” For one of the eight tracks, an instrumental piece titled “Horizon,” he relied on platforms that use AI to generate music to create demo arrangements that would convey his vision to the musicians who recorded the song. The demos he created by humming rough melodies into his phone and uploading the recordings into song generators like Suno and Udio weren’t for mixing into the final studio version of “Horizon,” Smith stressed. But tremors, stiffness and fatigue, which are common symptoms of Parkinson’s, caused his guitar skills to deteriorate during the more than a year he worked on the album, he said.…