YouTube sensation and music teacher Ms. Rachel and her husband, Aron Accurso, will release their debut album, the 23-track “I'm So Happy,” on Sept. 25. I know from the minute my kids were born, we’re singing to them,” Ms. Rachel, whose real name is Rachel Griffin Accurso, said. Big arrangements and simple songs“I'm So Happy” was co-produced by Aron Accurso and Grammy winner Scott Riesett and principally arranged by Mr. Aron as well. Aron Accurso reimagined a number of Ms. Rachel's fan favorite songs and childhood classics with a team of 19 vocalists and 42 instrumentalists. Ms. Rachel says she knows her album may bring attention to her advocacy and vice versa.