Of course they lip sync because bands like them that do this style of music is well known for purposely distorting their voices and they are unable to recreate it live.
Lene sounds awesome live, not like the manufactured, auto-tuned crap of today.. So out come the trolls saying she is lip syncing...... Did you ever consider that she is just a good singer?
@Serjook Then she must have recorded a version for this, because in recordings her voice is high pitched/cartoony. This is her real singing voice without any after alteration to it.
They replaced the line about Michael Jackson because of his death. But his skin was only black for the first few years of the 80s. That should be another reason to replace that line.