Original sentence: However, his ongoing problems with mental illness continued to hamper his success.In 1991, Johnston was able to air his music on a radio show while being hospitalized at Weston State Hospital.Johnston had written a song praising Mountain Dew during this hospitalization, in which he claimed to have been locked up because he "loved the Mountain Dew so much".Johnston was unable to complete studio sessions for his 1990 due to the intervention of his mental illness.While hospitalized, Johnston sent requests to his manager to have Yoko Ono produce his music and to contact PepsiCo about the possibility of becoming spokesman for the soft drink Mountain Dew