Bb Bass (Tuba) in Bb - Treble Clef - Part Book. the 2nd and 3rd cornet, solo and 1st horn adhere to the alto part;. Music picture above shows Solo Cornet part for layout purposes only. The extended third edition of the famous 120 Hymns for Brass Band has been freshly engraved with a music font specially commissioned by Wright & Round for ease of reading.