The Four Knights, a vocal quartet formed in 1943, were known for their smooth harmonies and elegant style. If you want to learn to sing like them, there are a few techniques to master.

1. First, work on your breath control. The Four Knights had an impressive range, from bass to falsetto, and to achieve that range, they needed to master their breath support. Breathing exercises like Farinelli Breathing can help you to control your breath and expand your range.
2. Next, practice your articulation. The Finger Bite exercise is a great tool to help you work on your diction and clarity of speech.
3. The Four Knights also had a skilled lead vocalist, and to emulate that, it can help to start with a song in your range and learn it effectively. Use the tips from How to Learn a Song Effectively to polish your performance, including memorizing the lyrics, working on phrasing, and perfecting your dynamics.
4. When singing together, the Four Knights' harmonies were always tight and coordinated. To work on your harmonies, try a tool like Pitch Training – Educational Singing Game, which will help you practice matching pitch and harmonizing.
5. Last but not least, pay attention to your posture and the way you hold your body while singing. Check out the tips in How Posture Affects Your Singing to ensure that you're using your body to create the best sound possible.

To really get a sense of the Four Knights' vocal style, check out some of their most popular songs like "I Get So Lonely," "Oh, Baby Mine," and "I Love The Sunshine Of Your Smile." These songs showcase their elegant style and unique vocal technique.

Use Singing Carrots' resources to enhance your learning experience. The Vocal range test can help you determine your vocal range, while the Pitch Accuracy test can be used to assess your pitch accuracy. You can also use the Vocal Pitch Monitor to see your sung notes on a virtual piano and the Song search tool to find songs matching your vocal range, difficulty, and genre preference.

Singing Carrots also has a course called Singing for Beginners that covers singing theory and practical tips, which can be helpful for you to learn singing like the Four Knights.