public async Task <int> AddSongThemeAsync(int songId, int themeId, string userId)
{
var songThemeId = await _themeRepository.AddSongThemeAsync(new SongTheme
{
SongId = songId,
ThemeId = themeId,
CreatedById = userId,
LastModifiedById = userId,
DateCreated = DateTime.Now,
DateLastModified = DateTime.Now
});
await AddSongThemeUserAsync(songThemeId, userId);
return(songThemeId);
}