97-Points by James Suckling.
Overture is a blend this year of the 2014, 2015 and 2016 vintages, with a dominance of 2016. 
"Mesmerizing aromas of flowers, bark, currants and blackberries. So perfumed. You just want to smell it. Exquisite tension and finesse with an almost Burgundian texture, yet it’s Napa in its soul with ripe fruit, stones, spices and Chinese tea leaf flavors. Savory and delicious. 
Blend: 77% Cabernet Sauvignon, 8% Petit Verdot, 8% Merlot, 5% Cabernet Franc, and 2% Malbec, aged for 18 months in New French oak. 
 
Winemaker Notes
Beginning in 1993 and following in the tradition of great Bordeaux estates, Opus One created a fine second wine called Overture. Every acre of the estate vineyard is meticulously farmed with the attention to detail and singular focus required to produce Opus One. This scrutiny carries through the blending process and certain lots will not be included in the final Opus One blend. Yet, when these lots are afforded additional time in barrel along with the added flexibility of blending across multiple vintages, the final wine achieves a remarkable elegance and complexity.
Overture displays a vibrant garnet color with expressive aromas of fresh red fruit. Notes of bright cherry and red currant are underpinned by more earthy tones of ground cocoa, cedar and vanilla. Extended barrel aging gives the wine an elegant texture accentuated by round tannins and a soft mouthfeel.
The estate vineyards of Opus One, comprised of four parcels, sit in the western portion of the famed Oakville in Napa Valley. Two parcels, totaling 100 acres, are within the renowned To Kalon Vineyard. These are complemented by the combined 70 acres of the Ballestra and River parcels, which envelop the winery. In the vineyards, hand-harvesting and other traditional approaches are taken wherever they work best.
 
Elegance and Complexity
Opus One is the realized dream of two men: Baron Philippe de Rothschild of Chateau Mouton Rothschild in Bordeaux and Napa Valley vintner Robert Mondavi. The estate vineyards rise from the western part of Oakville, including 100 acres within the highly acclaimed To-Kalon Vineyard and 70 acres combined between the Ballestra and River parcels surrounding the winery.
Beginning in 1993 and following in the tradition of great Bordeaux estates, Opus One created a fine second wine called Overture. Every acre of the estate vineyard is meticulously farmed with the attention to detail and singular focus required to produce Opus One. This scrutiny carries through the blending process and certain lots will not be included in the final Opus One blend. Yet, when these lots are afforded additional time in barrel along with the added flexibility of blending across multiple vintages, the final wine achieves a remarkable elegance and complexity.
Overture reflects the winemaker’s artistry by showcasing the talent of blending five traditional Bordeaux grape varieties and capturing terroir characteristics of the same variety grown in different soils. However, Overture’s third blending aspect – that of marrying multiple vintages – yields a softer, rounder expression of our estate that can be enjoyed upon release.