Annie Lennox and Al Green are influential figures in the music industry, known for their distinctive soulful voices and impactful lyrics. Scottish singer-songwriter Annie Lennox, formerly of the Eurythmics, is renowned for her unique contralto voice and her ability to blend pop, soul, and electronic music. American singer Al Green, often referred to as 'The Last of the Great Soul Singers', is famous for his emotive and distinctive gospel-infused style. Their collaborative single, "Put a Little Love in Your Heart", for the 1988 movie "Scrooged", showcases their combined vocal prowess and remains a memorable piece in their respective discographies.