Here are the songs that Rin and Len sung:
Kokoro
Melting Blue
Butterfly on the right shoulder - Len/Rin Version
Pretty Panties☆Akuma Rin
Kagami Uta
Hybrid
Kokoro x Kiseki
Trick and Treat
Gekokuzyou
Sangri La
Why don't you call me yet?
VOCALOID 2
No, they are a voice synthesizer or, more simply, a musical instrument, using Yamaha's Vocaloid technology. Kagamine Rin • Len are a product of Crypton Future Media.
Kagamine Rin and Len, from Vocaloid.
If there was one, it is no longer available.
Within the fandom, Len is commonly refered to as Rin's twin and thought of as a shota. His fanmade character item is bananas. Officially, Kagamine Rin and Len's relationship is not defined, but simply as mirror images of each other.
Let's hope this answers your question: Miku, Rin, Len, Meiko, and Luka are all Vocaloids. Vocaloid is a software from the company Yamaha (the people that brought you motorcycles). Vocaloid is basically a voice adjuster I think. Miku, Rin, Len, Meiko, and Luka's voices are Vocaloid BUT their virtual bodies are on a big screen. They are basically animated humans on a big TV. Again hope this answers your question!
Kagamine Len, 14, of Yamaha's-powered Vocaloid Engine 2, created by Crypton, is a male. But the person who does lens voice is also played by the person who plays rin kagamine who is a female, but his character is a male
Its about how Rin killed people and Len is trying to take the blame(again). Rin doesn't understand what Len's doing so that's why he keeps on saying "Say my name" in the song.
The original singer for the Servant of Evil is Kagamine Len with Kagamine Rin providing backup vocals.
Assming you mean Rin Kagamine. Rin Kagamine is a vocal package for the software VOCALOID. So she doesn't really have emotions, but usually she's portrayed as being a couple with her twin Len Kagamine.
Rin is officially 14.
They are voice-banks that sound well with each other when used in duets and were made with the ohter in mind. For example: MEIKO and KAITO Rin and Len Kagamine If one Vocaloid is said to be a counterpart of another, then this is what they mean.