Got no rhythm

When my eldest son T1 comes home from Uni, the games consoles come out. Neither my younger son T2 nor I play at all when T1 is not here. This is because I don't really have the time nor inclination and am not very good compared to them. T2 only plays when there is someone worth competing against.
So today T1 and I played guitar hero on the Wii.
I'm ok at it but only on the easy levels mainly because I have no rhythm and poor timing so have to concentrate like mad and practice. Meanwhile T1 plays effortlessly. But it's good fun.