text: Yo, understanding the mechanics behind titin regulation
  In cardiac muscle function, it's a situation of great importance
  Recent evidence got us convinced, man, it's insane
  Titin mutations, they be major players in cardiomyopathy, man, that's the game
  
  We discovered a complex, stress-regulated, that be the deal
  At the N2B region of titin, it's the real deal
  Fhl1, the four-and-a-half LIM domain protein, it's a player
  Mitogen-activated protein signaling cascade, in the mix, it's major
  
  Muscle compliance affected in Fhl1 knock-out cardiac muscle, it's true
  But the direct regulation of these components, it's something we gotta pursue
  Here we go, Fhl1, a negative regulator of titin N2B levels, it's a fact
  Phosphorylation-mediated mechanics, Fhl1 be attackin' that
  
  We found out, titin N2B, a substrate for Erk2, yo
  Fhl1 be messin' with Erk2-mediated titin-N2B phosphorylation, bro
  We pinpointed the region where Fhl1 interacts with titin-N2B, it's tight
  And the residues dependent on Erk2 phosphorylation, that's right
  
  We even got a theory 'bout a mutation causin' cardiomyopathy
  Involvin' this regulatory complex, man, it's a catastrophe
  These studies shine a light on titin-N2B mechano-signaling
  Pathways goin' haywire, man, cardiac disease, it be revealing
  
  So remember, dysfunction in these pathways, it's a big deal
  In cardiac disease states, muscle compliance, it can reveal