  The standard assumption in interpretation of stellar oscillation spectra from
photometry is that the excited mode have low angular degrees, typically $\ell<
3$. Considering the case of FG Vir, the $\delta$ Scuti star with the richest
known oscillation spectrum, we show that this assumption is not justified for
low amplitude peaks. The $\ell<3$ identifications have been found for 12
dominant peaks from pulsation amplitudes and phases. However, we show that for
the rest of the peaks (55), whose amplitudes are typically below 1 mmag, much
higher $\ell$'s are most likely.
  We argue that improving amplitude resolution to the micromagnitude level, as
expected from space observations, is not likely to be rewarded with a credible
mode identifications because the spectra will be dominated by high-$\ell$ modes
of unknown azimuthal order, $m$.
