David Seville was an American songwriter, musician and voice actor who is best known for creating the cartoon music group The Chipmunks in 1958. He was also a successful solo artist and producer who worked with many famous artists of his time, including Doris Day, Frank Sinatra, and Ella Fitzgerald.

If you want to learn to sing like David Seville, you should consider focusing on his unique pop music tone and emphasize the vibrato in your voice. He was also known for his ability to switch between different vocal registers, so you can practice that as well.

To start, you can explore Singing Carrots' Pitch Training exercises, which allow you to master pitch accuracy and improve your vibrato. Another good option is to take the Singing Carrots' educational singing course, which covers the basics of singing, including breathing techniques, vocal registers, and articulation.

When it comes to David Seville's songs, "Witch Doctor" and "The Chipmunk Song (Christmas Don't Be Late)" exhibit his unique pop vocal style. Try to emulate his singing technique while practicing these songs.

For more specific guidance and personalized feedback, you can also engage a professional vocal coach to work with you one-on-one, but with the above resources and tips, you can begin developing your David Seville-inspired singing skills.