リンリンシグナル (Rin Rin Signal)

Rin Rin Signal/リンリンシグナル is a popular duet sung by Kagamine Rin and Len, music and original video by Signal-P, with the PV using photos from several piapro users.
 * Nicovideo Broadcast
 * Youtube Broadcast

Background
The song is mostly centred around Rin and as the song goes on, she often mentions how much she wants Len to recognise her love for him through the "Rin Rin Signal" as the title claims- "her heart ringing" for Len. Mid-way of the song Len sings for the second verse. He is also portrayed to love Rin but is unsure of how to tell her of his feelings, face-to-face. Rin calls his methods of love "mean" but refuses to let go. In one specific PV Rin is shown to go as far as following Len to the bathroom- she runs screaming. Rin continues expressing her seemingly endless choice of words for her love for Len until he finally admits he can hear her signal, implying he loves her the same.

Official Revisions/Covers
As time goes by, The song garnered the attention of various fans, hence many PVs and remixes were made. Official reversion or Covers though, rose out as time passes by.