Kathleen Dougherty

Does anyone know whatever happened to Josie's singing voice?Cheryl Ladd and Patrice Holloway both went off to have careers,but no one seems to know what happened to Kathleen Dougherty. On the actual show she's billed as Cathy Dougher.She's also billed as Cathy Douglas on some sights.It's inconsistent whether Kathleen Dougherty or Cathy Douglas is her original name. Is K.D. the same one listed under film editors on the IMDB site? I've also heard that when JPC in Outerspace roled around,the band had disbanded and someone else was brought in to record the second theme song.So, who were that lot?