I have my 1e PHB right here. 1e Bards are as close to prestige classes as anything before 3e, and (I think) were actually the inspiration for PrCs:
"A bard must have scores of 15 orbetter in the following abilities: strength, wisdom, dexterity, and charisma. Furthermore, a bard must have at least a 12 score in intelligence and a 10 in constitution."
We can dispense with that, as 3e has dispensed with all ability score requirements.
"A bard must be human or half-elven."
Thats debatable within 3e rules.
"Bards begin play as fighters, and they must remain exclusively fighters untl they have achieved at least the 5th level of experience. Anytime thereafter, and in any even prior to the 8th level, they must change their class to that of thieves. Again, sometime between 5th and 9th level of ability, bards msut leave off theiving and begin clerical studies as druids; but at this time they are actually bards and are under druidical tutelage. Bards must fulfill the requirement in all the above classes before progressing to bards table 1. They must always remain neutral, but can be chaotic, evil, good, or lawful neutral if they wish."
Then there was Bards table 1, showing hit dice, druid spell levels available by class level, etc.
Bards also got a new language ever few levels or so, and a percent chance to to cast charm person or charm monter just by playing music. This, I would assume, is replaced by the bards special abilities associated with the Perform skill. Further powers are described for the 1e bard that duplicate those of the 3e Bard and their Perform skill.
1e Bards also got a legend lore percentage, which I assume would be replaced by Bardic Knowledge in 3e. Bards also had these really neat Gaelic titles, called Colleges, which unfortunately also would be dispensed with in 3e:
1: Probationer
2-4: Fochlucan
5-7: Mac-Fuirmidh
8-10: Doss
11-13: Canaith
14-16: Cli
17-19: Anstruth
20-22: Ollamh
23: Magna Alumnae (sorry...thats Latin, not Gaelic
)
It goes on to say that Bards will not associate with a bard of a lesser collage, except for the Magna Alumnae, "who will happily aid (by advice and suggestion) any other bard of any level."
1e Bards were allowed to use leather or magical chainmail only, no shields, clubs, daggers, dards, javelins, slings, scimitars (misspelled scimiters, BTW), spear, staff, and swords (bastard, long, or short). They can use oil as a weapon, and only neutral evil bards will use poison.
There are about 2 1/2 pages detailing the bard, from pages 117-119 in the 1e PHB.