Edit the given text to be clearer:
By far the most successful of the Reprise acts who moved to Warner Bros. was Fleetwood Mac, whose massive success firmly established Warner Bros. in the front rank of major labels --. Few would have predicted Warner Bros. from the band's tumultuous history.
By far the most successful of the Reprise acts who moved to Warner Bros. was Fleetwood Mac, whose massive success firmly established Warner Bros. in the front rank of major labels -- although few would have predicted it from the band's tumultuous history.