...
#include <cctype>
...
//------------------------------------------------------------------------------
// Find a specific album by title
//------------------------------------------------------------------------------
int Jukebox::findAlbumIndex(std::string &pAlbumToSearch)
{
    auto it = find_if(vectorJukebox.begin(), vectorJukebox.end(), [&pAlbumToSearch](const Album &a)
    {
        std::string albumName = a.getAlbum();

        return ((albumName.size() == pAlbumToSearch.size()) && std::equal(albumName.begin(), albumName.end(), pAlbumToSearch.begin(), [](char& c1, char& c2) {
            return (c1 == c2 || std::toupper(c1) == std::toupper(c2));
        }));
    });


    int index = distance(vectorJukebox.begin(), it);

    return index;
}