Piano intervals! Good call.
Today I performed some VO2 max intervals at a new power using my TT from the San Dimas stage race. It's only 6 w higher, but I felt it:
1x3': 124%
1x5': 111%
1x10': 103%
1x5': 112%
1x3': 122%
__________________
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste