D'Addario is working on Cello strings for 4ths tuning. I rented a cello a year ago (11/2010) and started experimenting with 4ths tuning. I found C#,F#,B,E to be pretty decent. I contacted D'Addario in October of 20122 and was excited to hear they are working on a 4ths tuning gauge. They said they'd contact me when they were getting close.... and last week I got the email that they are sending me a set of prototype strings to evaluate. They are designed to be tuned E,A,D,G in the same octave as the electric guitar. Got to say I impressed with D'Addario for not only experimenting in this direction, but also their follow up with me. More on this when I get the strings. I'll be trying them on my Steinberger 5 string cello. I'll keep the low C and drop it to B and then add the other 4 strings.
