The doo wop songs had a piano triplet rhythm BIAB software does NOT offer.If you have the ChordPulse music program, listen to the "slow rock" style at 75 beats per minute.They have it down perfectly. This style was used in such songs as My Prayer, Twilight Time, Sixteen Candles,Red Sails in the Sunset and You belong to me.It is a tragedy that the BIAB programmers have neglected the true rhythm of these classic ballads and many more of the golden era. Thank you for caring