In Jyotish, we always look at the Ascendant and its Lord (Planet that rules the sign) first. Tina Turner is a Cancer Ascendant (Lagna, Rising) in the Nakshatra (Lunar Mansion) Ashlesha, and Moon is in Taurus under the Rohin Nakshatra. How do we know this? Ashlesha Natives (especially Women) have almost cat-like facial features (High cheekbones, seductive eyes,etc.). In life, they tend to become masters of seducing the opposite sex which often-times can turn bad due to the lack of control that the men they're involved with having over them. Another prominent Ashlesha native is Marilyn Monroe which is another good example of this. The Lagna Lord, Moon is exalted in the sign of Taurus, which gives great resilience in life, but Venus is in the 6th House (The Lord of Taurus) is damaged, so this brings issues to her mother. Next, we'll the 7th House of Marriage and partnerships which is ruled by Capricorn. Saturn is the Lord of The 7th and is debilitated in the 10th of Aries. This shows her tumultuous relationship with Ike Turner. The placement is further damaged by the presence of Ketu (Southern Node). She began working with Ike in 1958 during a Rahu-Saturn Dasha Period. Rahu (Northern Node), which sits in the 4th House shows an unconventional upbringing. According to her bio, she moved around a lot growing up. You can see the musical talent from Moon being exalted in the 11th house, and from the 2nd Lord (Voice) being Conjunct the 3rd Lord (Communication, Singing, Talking) in the 5th house (Entertainment Industry, Speculative Business) of Scorpio. These two Lords in Scorpio gives her a raspy singing voice. Her huge success is due to many factors in the chart, but I'll focus on her Jupiter period of life (1971-1987). Her Jupiter is in the 9th House in its own sign of Pisces. This creates a Lakshmi Yoga which brings abundant wealth and successful accomplishment of one's goals. Its' a rare Yoga (Combination), but is common in the charts a very successful people. Most of the Mega Hits were released in this period. "Private Dancer" and "What's Love Got To Do With It" were released in this period. She also won a Grammy during this time. Also, this placement shows her conversion to Buddhism. You can see this by Jupiter being in Pisces in the 9th House of Spiritual Teachings and Higher Knowledge. Pisces is the more spiritual of the 2 Jupiter ruled signs. If Jupiter were placed in Sagittarius, she may have doubled down in Christianity or one of the other Mainstream religions. Sagittarius is more into convention religious doctrines as compared to Pisces. Her next period, The Saturn Dasha, Also brought a tremendous amount of success in spite of Saturn being Debilitated. There are 2 major reasons why this occurs. The first reason is that she already dealt with most of the Karma of that Debilitated Saturn in her relationship with Ike Turner. The second reason is that Saturn is involved in Mutual Exchange with Mars (Paravatana Yoga), which makes both planets function almost like they are in their own signs. The combination will raise someone up in life. Of course, they're many other key things happening in this chart, but I'll table it here.