Protege U100CM. 15SM Soprano Bundle. Here is the Best Cordoba Ukulele. 15TM Tenor Uke. Protege by Cordoba U100CM The Protégé by Cordoba U100CM is a concert size ukulele with mahogany top, back, and sides, a matte finish, and a mother-of-pearl rosette. Cordoba 15CM Concert Ukulele. It's the perfect candidate for beginners who are just starting to learn the ukulele! The first Cordoba I featured was the 20TM-CE Tenor Ukulele, and whilst it wasn't too bad it fell into the trap of many Cordoba's I have played in that they are over built, heavy and off balance.It was also slightly higher up the spec line for Cordoba compared to this one which is an entry level offering. More about the Protégé by Córdoba Series 20TM Tenor Uke. 20CM Concert Uke. Includes gig bag.