Wisp Call plays when you use Trellek's whistle to alert the Wisps in Ultima VII: The Black Gate (DOS). As expected, it is a woodwind heavy song. The tune is also heard whenever you play panpipes in the game and at the house of Silamo, the gardener of Terfin.
Herman Miller, who oversaw the Ultima VI: The False Prophet soundtrack, composed the song making it one of the few songs in the game not composed by Dana Glover. This song is track 55 in the game's data files.