Hello does anybody know if Al ever sung occassionally in the band with richie, potsie and ralph

in the 4th season ep #81 - The Graduation, Al sings 'I Love a Parade' at the prom (but it wasn't really with the guys)

...and Al sings 'Goodnight Sweetheart' as the last dance of the prom.

in the Valentine's episode #108- Be My Valentine, Al sings 'Isn't It Romantic' (probably doesnt count either)

in #128- The Kissing Bandit, Potsie sings a song at Arnold's with Ralph on the piano, Richie isn't there to do the saxophone solo so Al plays his kazoo

i remember seeing it.