Theme: Tutti - Woodwinds - Brass - Strings - Percussion - Tutti

Variations: Flutes - Oboes - Clarinets - Bassoons
     Violins - Violas - Cellos - Basses, then Harp
     Horns - Trumpets - Trombones & Tuba, then Percussion

The timpani is the most prominent percussion instrument of early orchestras. In fact, the timpanist in a major orchestra will not play any other instrument.