CWB II gives three settings of the Pentecost Sequence. They all use Peter Scagnelli’s translation of Veni Sancte Spiritus a C13 sequence attributed to Stephen Langdon, the Archbishop of Canterbury, or possibly Pope Innocent III.
378a/b is chant mode 1 arranged by Geoffrey Cox and goes into the Gospel Acclamation. 380 is essentially the same tune made metrical by Adriaan Engels. The text is here along with a vocal + guitar version of Engels’s arrangement.
I’ll leave those chant based ones alone because BIAB IS LOUSY AT CHANT.
379 is the setting by Samuel Webbe. Only verses 1,3,5,7 and 9 from the text noted above are used in CWB II.
This has a different but PD translation by Edward Caswell and the music is the same arrangement as CWB II..